./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:04:19,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:04:19,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:04:19,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:04:19,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:04:19,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:04:19,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:04:19,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:04:19,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:04:19,369 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:04:19,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:04:19,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:04:19,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:04:19,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:04:19,369 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:04:19,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:04:19,370 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:04:19,371 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:04:19,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:04:19,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:04:19,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:04:19,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:04:19,372 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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/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 -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2024-12-02 14:04:19,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:04:19,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:04:19,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:04:19,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:04:19,603 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:04:19,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2024-12-02 14:04:22,229 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/data/665a90fa8/939c6c8b09af40aba1e1afe8890ce59b/FLAG495c34ed8 [2024-12-02 14:04:22,524 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:04:22,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2024-12-02 14:04:22,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/data/665a90fa8/939c6c8b09af40aba1e1afe8890ce59b/FLAG495c34ed8 [2024-12-02 14:04:22,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/data/665a90fa8/939c6c8b09af40aba1e1afe8890ce59b [2024-12-02 14:04:22,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:04:22,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:04:22,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:04:22,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:04:22,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:04:22,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:04:22" (1/1) ... [2024-12-02 14:04:22,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e965a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:22, skipping insertion in model container [2024-12-02 14:04:22,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:04:22" (1/1) ... [2024-12-02 14:04:22,864 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:04:23,266 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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-12-02 14:04:23,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:04:23,288 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:04:23,296 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-12-02 14:04:23,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2024-12-02 14:04:23,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2024-12-02 14:04:23,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2024-12-02 14:04:23,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2024-12-02 14:04:23,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2024-12-02 14:04:23,299 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2024-12-02 14:04:23,299 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-12-02 14:04:23,299 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2024-12-02 14:04:23,299 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2024-12-02 14:04:23,392 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_b9c5c267-e7b6-43f2-8041-a4871f872bfe/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-12-02 14:04:23,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:04:23,422 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:04:23,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23 WrapperNode [2024-12-02 14:04:23,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:04:23,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:04:23,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:04:23,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:04:23,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,482 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 848 [2024-12-02 14:04:23,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:04:23,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:04:23,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:04:23,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:04:23,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,520 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 14:04:23,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:04:23,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:04:23,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:04:23,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:04:23,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (1/1) ... [2024-12-02 14:04:23,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:04:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:23,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:04:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:04:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-02 14:04:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-02 14:04:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:04:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:04:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 14:04:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 14:04:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:04:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:04:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:04:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:04:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:04:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:04:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:04:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:04:23,795 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:04:23,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:04:24,857 INFO L? ?]: Removed 448 outVars from TransFormulas that were not future-live. [2024-12-02 14:04:24,857 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:04:24,878 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:04:24,878 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:04:24,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:04:24 BoogieIcfgContainer [2024-12-02 14:04:24,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:04:24,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:04:24,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:04:24,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:04:24,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:04:22" (1/3) ... [2024-12-02 14:04:24,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d91eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:04:24, skipping insertion in model container [2024-12-02 14:04:24,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:04:23" (2/3) ... [2024-12-02 14:04:24,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d91eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:04:24, skipping insertion in model container [2024-12-02 14:04:24,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:04:24" (3/3) ... [2024-12-02 14:04:24,888 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2024-12-02 14:04:24,899 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:04:24,901 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product21.cil.c that has 26 procedures, 569 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:04:24,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:04:24,983 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;@6f077f17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:04:24,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:04:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 444 states have (on average 1.6914414414414414) internal successors, (751), 465 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 14:04:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 14:04:25,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:25,007 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:25,007 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:25,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:25,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1155303171, now seen corresponding path program 1 times [2024-12-02 14:04:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59389582] [2024-12-02 14:04:25,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:25,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59389582] [2024-12-02 14:04:25,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59389582] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924153462] [2024-12-02 14:04:25,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:25,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:25,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:04:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:26,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:04:26,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:04:26,047 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924153462] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:26,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:26,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-02 14:04:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884804426] [2024-12-02 14:04:26,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:26,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:04:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:26,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:04:26,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:04:26,078 INFO L87 Difference]: Start difference. First operand has 569 states, 444 states have (on average 1.6914414414414414) internal successors, (751), 465 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 14:04:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:26,143 INFO L93 Difference]: Finished difference Result 590 states and 977 transitions. [2024-12-02 14:04:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:04:26,145 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2024-12-02 14:04:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:26,162 INFO L225 Difference]: With dead ends: 590 [2024-12-02 14:04:26,162 INFO L226 Difference]: Without dead ends: 561 [2024-12-02 14:04:26,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:04:26,169 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:26,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-12-02 14:04:26,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-12-02 14:04:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 457 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2024-12-02 14:04:26,253 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 111 [2024-12-02 14:04:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:26,254 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2024-12-02 14:04:26,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 14:04:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2024-12-02 14:04:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:04:26,263 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:26,263 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:26,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:04:26,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:04:26,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:26,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 37133803, now seen corresponding path program 1 times [2024-12-02 14:04:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:26,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009843942] [2024-12-02 14:04:26,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009843942] [2024-12-02 14:04:26,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009843942] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049834565] [2024-12-02 14:04:26,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:26,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:26,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:04:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:27,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:27,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:27,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049834565] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:27,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:27,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478695138] [2024-12-02 14:04:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:27,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:27,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:27,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:27,123 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:27,206 INFO L93 Difference]: Finished difference Result 1113 states and 1854 transitions. [2024-12-02 14:04:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:04:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-12-02 14:04:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:27,212 INFO L225 Difference]: With dead ends: 1113 [2024-12-02 14:04:27,212 INFO L226 Difference]: Without dead ends: 561 [2024-12-02 14:04:27,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:27,217 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:27,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2751 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-12-02 14:04:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-12-02 14:04:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.687214611872146) internal successors, (739), 457 states have internal predecessors, (739), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2024-12-02 14:04:27,250 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 112 [2024-12-02 14:04:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:27,250 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2024-12-02 14:04:27,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2024-12-02 14:04:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:04:27,255 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:27,255 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:27,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:04:27,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 14:04:27,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:27,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -128715989, now seen corresponding path program 1 times [2024-12-02 14:04:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399012085] [2024-12-02 14:04:27,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:27,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399012085] [2024-12-02 14:04:27,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399012085] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174004089] [2024-12-02 14:04:27,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:27,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:27,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:27,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:04:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:27,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:27,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:28,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174004089] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227083366] [2024-12-02 14:04:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:28,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:28,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:28,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:28,005 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:28,060 INFO L93 Difference]: Finished difference Result 1113 states and 1852 transitions. [2024-12-02 14:04:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:04:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-12-02 14:04:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:28,064 INFO L225 Difference]: With dead ends: 1113 [2024-12-02 14:04:28,064 INFO L226 Difference]: Without dead ends: 561 [2024-12-02 14:04:28,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:28,067 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 4 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:28,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2751 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-12-02 14:04:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-12-02 14:04:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.6849315068493151) internal successors, (738), 457 states have internal predecessors, (738), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2024-12-02 14:04:28,092 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 114 [2024-12-02 14:04:28,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:28,092 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2024-12-02 14:04:28,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2024-12-02 14:04:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:04:28,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:28,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:28,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:04:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:28,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:28,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1371366677, now seen corresponding path program 1 times [2024-12-02 14:04:28,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521783086] [2024-12-02 14:04:28,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521783086] [2024-12-02 14:04:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521783086] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70605809] [2024-12-02 14:04:28,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:28,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:28,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:28,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:28,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:04:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:28,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:28,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:28,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70605809] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:28,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:28,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:28,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817743775] [2024-12-02 14:04:28,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:28,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:28,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:28,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:28,855 INFO L87 Difference]: Start difference. First operand 561 states and 929 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:28,937 INFO L93 Difference]: Finished difference Result 1120 states and 1859 transitions. [2024-12-02 14:04:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:28,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-12-02 14:04:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:28,942 INFO L225 Difference]: With dead ends: 1120 [2024-12-02 14:04:28,943 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 14:04:28,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:28,946 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 13 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:28,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2748 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 14:04:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 14:04:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 465 states have internal predecessors, (750), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 941 transitions. [2024-12-02 14:04:28,982 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 941 transitions. Word has length 116 [2024-12-02 14:04:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:28,983 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 941 transitions. [2024-12-02 14:04:28,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 941 transitions. [2024-12-02 14:04:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:04:28,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:28,987 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:28,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:04:29,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:29,187 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:29,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1478844785, now seen corresponding path program 1 times [2024-12-02 14:04:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044090656] [2024-12-02 14:04:29,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044090656] [2024-12-02 14:04:29,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044090656] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519151942] [2024-12-02 14:04:29,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:29,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:29,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:29,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:04:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:29,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:29,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:29,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519151942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781039875] [2024-12-02 14:04:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:29,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:29,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:29,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:29,713 INFO L87 Difference]: Start difference. First operand 570 states and 941 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:29,772 INFO L93 Difference]: Finished difference Result 1122 states and 1860 transitions. [2024-12-02 14:04:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:29,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-12-02 14:04:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:29,776 INFO L225 Difference]: With dead ends: 1122 [2024-12-02 14:04:29,776 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 14:04:29,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:29,779 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 11 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:29,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2748 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 14:04:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 14:04:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6793721973094171) internal successors, (749), 465 states have internal predecessors, (749), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 940 transitions. [2024-12-02 14:04:29,795 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 940 transitions. Word has length 117 [2024-12-02 14:04:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:29,795 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 940 transitions. [2024-12-02 14:04:29,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 940 transitions. [2024-12-02 14:04:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:04:29,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:29,798 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:29,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:04:29,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:29,999 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 202636839, now seen corresponding path program 1 times [2024-12-02 14:04:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983453171] [2024-12-02 14:04:29,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983453171] [2024-12-02 14:04:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983453171] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:30,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313352730] [2024-12-02 14:04:30,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:30,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:30,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:30,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:30,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:04:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:30,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:30,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:30,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313352730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:30,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:30,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696951528] [2024-12-02 14:04:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:30,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:30,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:30,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:30,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:30,500 INFO L87 Difference]: Start difference. First operand 570 states and 940 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:30,565 INFO L93 Difference]: Finished difference Result 1122 states and 1859 transitions. [2024-12-02 14:04:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:30,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-12-02 14:04:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:30,569 INFO L225 Difference]: With dead ends: 1122 [2024-12-02 14:04:30,569 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 14:04:30,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:30,572 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 10 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:30,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2748 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 14:04:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 14:04:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6771300448430493) internal successors, (748), 465 states have internal predecessors, (748), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 939 transitions. [2024-12-02 14:04:30,592 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 939 transitions. Word has length 118 [2024-12-02 14:04:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:30,592 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 939 transitions. [2024-12-02 14:04:30,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 939 transitions. [2024-12-02 14:04:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:04:30,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:30,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:30,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:04:30,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:30,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:30,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash -143553875, now seen corresponding path program 1 times [2024-12-02 14:04:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285242901] [2024-12-02 14:04:30,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285242901] [2024-12-02 14:04:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285242901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217846000] [2024-12-02 14:04:31,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:31,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:31,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:31,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:04:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:31,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:04:31,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:31,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217846000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:31,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:31,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 14:04:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241082899] [2024-12-02 14:04:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:31,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:04:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:31,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:04:31,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:04:31,448 INFO L87 Difference]: Start difference. First operand 570 states and 939 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:31,546 INFO L93 Difference]: Finished difference Result 1141 states and 1889 transitions. [2024-12-02 14:04:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-12-02 14:04:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:31,550 INFO L225 Difference]: With dead ends: 1141 [2024-12-02 14:04:31,550 INFO L226 Difference]: Without dead ends: 593 [2024-12-02 14:04:31,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:04:31,552 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 100 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:31,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5428 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-12-02 14:04:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 589. [2024-12-02 14:04:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 483 states have internal predecessors, (774), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-12-02 14:04:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 970 transitions. [2024-12-02 14:04:31,571 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 970 transitions. Word has length 119 [2024-12-02 14:04:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:31,571 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 970 transitions. [2024-12-02 14:04:31,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 970 transitions. [2024-12-02 14:04:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:04:31,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:31,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:31,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:04:31,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 14:04:31,774 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1076908212, now seen corresponding path program 1 times [2024-12-02 14:04:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089154639] [2024-12-02 14:04:31,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089154639] [2024-12-02 14:04:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089154639] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980367026] [2024-12-02 14:04:31,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:31,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:31,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:31,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:04:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:32,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:32,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:32,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980367026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:32,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156887488] [2024-12-02 14:04:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:32,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:32,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:32,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:32,272 INFO L87 Difference]: Start difference. First operand 589 states and 970 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:32,407 INFO L93 Difference]: Finished difference Result 1197 states and 1990 transitions. [2024-12-02 14:04:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:04:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-12-02 14:04:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:32,412 INFO L225 Difference]: With dead ends: 1197 [2024-12-02 14:04:32,412 INFO L226 Difference]: Without dead ends: 604 [2024-12-02 14:04:32,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:32,416 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 76 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:32,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2639 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-12-02 14:04:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 589. [2024-12-02 14:04:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 483 states have internal predecessors, (769), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-12-02 14:04:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 965 transitions. [2024-12-02 14:04:32,441 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 965 transitions. Word has length 119 [2024-12-02 14:04:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:32,441 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 965 transitions. [2024-12-02 14:04:32,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 965 transitions. [2024-12-02 14:04:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 14:04:32,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:32,445 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:32,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:04:32,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:32,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:32,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:32,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2058173598, now seen corresponding path program 1 times [2024-12-02 14:04:32,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:32,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344193677] [2024-12-02 14:04:32,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:04:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344193677] [2024-12-02 14:04:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344193677] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613902642] [2024-12-02 14:04:32,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:32,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:32,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:04:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:33,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:33,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:33,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613902642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:33,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:33,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:33,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677455532] [2024-12-02 14:04:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:33,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:33,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:33,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:33,125 INFO L87 Difference]: Start difference. First operand 589 states and 965 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:33,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:33,239 INFO L93 Difference]: Finished difference Result 1197 states and 1980 transitions. [2024-12-02 14:04:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:04:33,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-12-02 14:04:33,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:33,244 INFO L225 Difference]: With dead ends: 1197 [2024-12-02 14:04:33,244 INFO L226 Difference]: Without dead ends: 604 [2024-12-02 14:04:33,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:33,247 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 75 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:33,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2639 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-12-02 14:04:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 589. [2024-12-02 14:04:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 462 states have (on average 1.6536796536796536) internal successors, (764), 483 states have internal predecessors, (764), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-12-02 14:04:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 960 transitions. [2024-12-02 14:04:33,271 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 960 transitions. Word has length 121 [2024-12-02 14:04:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:33,271 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 960 transitions. [2024-12-02 14:04:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 960 transitions. [2024-12-02 14:04:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 14:04:33,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:33,275 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:33,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:04:33,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 14:04:33,476 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:33,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash -439124756, now seen corresponding path program 1 times [2024-12-02 14:04:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215984858] [2024-12-02 14:04:33,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215984858] [2024-12-02 14:04:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215984858] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277700270] [2024-12-02 14:04:33,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:33,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:33,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:33,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:04:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:33,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:33,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:33,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277700270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:33,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945506536] [2024-12-02 14:04:33,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:33,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:33,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:33,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:33,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:33,943 INFO L87 Difference]: Start difference. First operand 589 states and 960 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:34,119 INFO L93 Difference]: Finished difference Result 1248 states and 2052 transitions. [2024-12-02 14:04:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-12-02 14:04:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:34,124 INFO L225 Difference]: With dead ends: 1248 [2024-12-02 14:04:34,124 INFO L226 Difference]: Without dead ends: 685 [2024-12-02 14:04:34,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:34,127 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 130 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:34,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2670 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-12-02 14:04:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 640. [2024-12-02 14:04:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 512 states have (on average 1.658203125) internal successors, (849), 533 states have internal predecessors, (849), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1044 transitions. [2024-12-02 14:04:34,151 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1044 transitions. Word has length 123 [2024-12-02 14:04:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:34,151 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1044 transitions. [2024-12-02 14:04:34,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1044 transitions. [2024-12-02 14:04:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:04:34,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:34,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:34,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:04:34,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 14:04:34,355 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:34,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 864979016, now seen corresponding path program 1 times [2024-12-02 14:04:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:34,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961257707] [2024-12-02 14:04:34,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961257707] [2024-12-02 14:04:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961257707] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130866934] [2024-12-02 14:04:34,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:34,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:34,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:34,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:04:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:34,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:04:34,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:34,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:34,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130866934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 14:04:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32336134] [2024-12-02 14:04:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:34,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:04:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:34,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:04:34,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:04:34,961 INFO L87 Difference]: Start difference. First operand 640 states and 1044 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:35,105 INFO L93 Difference]: Finished difference Result 1210 states and 1981 transitions. [2024-12-02 14:04:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:04:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-12-02 14:04:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:35,108 INFO L225 Difference]: With dead ends: 1210 [2024-12-02 14:04:35,109 INFO L226 Difference]: Without dead ends: 662 [2024-12-02 14:04:35,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:04:35,111 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 113 mSDsluCounter, 5305 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6204 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:35,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6204 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-02 14:04:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 640. [2024-12-02 14:04:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 512 states have (on average 1.658203125) internal successors, (849), 533 states have internal predecessors, (849), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:35,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1044 transitions. [2024-12-02 14:04:35,128 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1044 transitions. Word has length 124 [2024-12-02 14:04:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:35,128 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1044 transitions. [2024-12-02 14:04:35,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1044 transitions. [2024-12-02 14:04:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:04:35,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:35,131 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:35,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 14:04:35,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 14:04:35,331 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:35,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1024907480, now seen corresponding path program 1 times [2024-12-02 14:04:35,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:35,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169793864] [2024-12-02 14:04:35,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:35,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169793864] [2024-12-02 14:04:35,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169793864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569752511] [2024-12-02 14:04:35,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:35,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:04:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:35,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:35,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:04:35,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569752511] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749939625] [2024-12-02 14:04:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:35,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:35,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:35,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:35,776 INFO L87 Difference]: Start difference. First operand 640 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:35,904 INFO L93 Difference]: Finished difference Result 1251 states and 2053 transitions. [2024-12-02 14:04:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-12-02 14:04:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:35,910 INFO L225 Difference]: With dead ends: 1251 [2024-12-02 14:04:35,910 INFO L226 Difference]: Without dead ends: 673 [2024-12-02 14:04:35,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:35,912 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 124 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:35,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2643 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:35,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-12-02 14:04:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 640. [2024-12-02 14:04:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 512 states have (on average 1.6484375) internal successors, (844), 533 states have internal predecessors, (844), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1039 transitions. [2024-12-02 14:04:35,939 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1039 transitions. Word has length 124 [2024-12-02 14:04:35,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:35,940 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1039 transitions. [2024-12-02 14:04:35,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:35,940 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1039 transitions. [2024-12-02 14:04:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:04:35,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:35,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:35,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:04:36,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:36,144 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:36,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1941532425, now seen corresponding path program 1 times [2024-12-02 14:04:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732094995] [2024-12-02 14:04:36,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732094995] [2024-12-02 14:04:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732094995] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469175006] [2024-12-02 14:04:36,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:36,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:36,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:04:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:36,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:04:36,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:36,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:36,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469175006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:36,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:36,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 14:04:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427402983] [2024-12-02 14:04:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:36,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:04:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:36,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:04:36,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:04:36,655 INFO L87 Difference]: Start difference. First operand 640 states and 1039 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:36,723 INFO L93 Difference]: Finished difference Result 1145 states and 1873 transitions. [2024-12-02 14:04:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:36,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-12-02 14:04:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:36,729 INFO L225 Difference]: With dead ends: 1145 [2024-12-02 14:04:36,729 INFO L226 Difference]: Without dead ends: 664 [2024-12-02 14:04:36,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:36,731 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 86 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:36,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5393 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-12-02 14:04:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 659. [2024-12-02 14:04:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6477272727272727) internal successors, (870), 551 states have internal predecessors, (870), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2024-12-02 14:04:36,755 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 124 [2024-12-02 14:04:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:36,756 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2024-12-02 14:04:36,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2024-12-02 14:04:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:04:36,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:36,759 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:36,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 14:04:36,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:36,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:36,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1612907822, now seen corresponding path program 1 times [2024-12-02 14:04:36,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:36,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083834204] [2024-12-02 14:04:36,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:37,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083834204] [2024-12-02 14:04:37,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083834204] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:37,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129648035] [2024-12-02 14:04:37,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:37,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:37,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:37,026 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:37,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 14:04:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:37,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:04:37,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:37,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129648035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:37,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 14:04:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034953280] [2024-12-02 14:04:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:37,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:04:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:37,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:04:37,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:04:37,430 INFO L87 Difference]: Start difference. First operand 659 states and 1069 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:37,500 INFO L93 Difference]: Finished difference Result 1175 states and 1924 transitions. [2024-12-02 14:04:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-12-02 14:04:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:37,504 INFO L225 Difference]: With dead ends: 1175 [2024-12-02 14:04:37,504 INFO L226 Difference]: Without dead ends: 694 [2024-12-02 14:04:37,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:37,506 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 95 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5383 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:37,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5383 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-12-02 14:04:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 659. [2024-12-02 14:04:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6477272727272727) internal successors, (870), 551 states have internal predecessors, (870), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2024-12-02 14:04:37,520 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 125 [2024-12-02 14:04:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:37,520 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2024-12-02 14:04:37,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2024-12-02 14:04:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:04:37,523 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:37,523 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:37,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 14:04:37,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 14:04:37,723 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:37,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -397152686, now seen corresponding path program 1 times [2024-12-02 14:04:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233541221] [2024-12-02 14:04:37,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:04:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233541221] [2024-12-02 14:04:37,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233541221] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:37,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641424862] [2024-12-02 14:04:37,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:37,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:37,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 14:04:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:38,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:04:38,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:38,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:38,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641424862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:38,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:38,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 14:04:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307432338] [2024-12-02 14:04:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:38,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:04:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:38,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:04:38,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:38,188 INFO L87 Difference]: Start difference. First operand 659 states and 1069 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:38,315 INFO L93 Difference]: Finished difference Result 1160 states and 1898 transitions. [2024-12-02 14:04:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:04:38,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-12-02 14:04:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:38,320 INFO L225 Difference]: With dead ends: 1160 [2024-12-02 14:04:38,321 INFO L226 Difference]: Without dead ends: 679 [2024-12-02 14:04:38,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:04:38,323 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 113 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:38,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6212 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-12-02 14:04:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 659. [2024-12-02 14:04:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6477272727272727) internal successors, (870), 551 states have internal predecessors, (870), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2024-12-02 14:04:38,344 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 125 [2024-12-02 14:04:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:38,344 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2024-12-02 14:04:38,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2024-12-02 14:04:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:04:38,347 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:38,347 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:38,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 14:04:38,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:38,547 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:38,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:38,548 INFO L85 PathProgramCache]: Analyzing trace with hash -177742095, now seen corresponding path program 1 times [2024-12-02 14:04:38,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590131752] [2024-12-02 14:04:38,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590131752] [2024-12-02 14:04:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590131752] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299871278] [2024-12-02 14:04:38,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:38,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:38,642 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:38,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 14:04:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:38,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:38,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:04:38,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299871278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217148677] [2024-12-02 14:04:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:38,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:38,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:38,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:38,959 INFO L87 Difference]: Start difference. First operand 659 states and 1069 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:39,005 INFO L93 Difference]: Finished difference Result 1212 states and 1983 transitions. [2024-12-02 14:04:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-12-02 14:04:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:39,009 INFO L225 Difference]: With dead ends: 1212 [2024-12-02 14:04:39,009 INFO L226 Difference]: Without dead ends: 659 [2024-12-02 14:04:39,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:39,011 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 13 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:39,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2717 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-12-02 14:04:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-12-02 14:04:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6401515151515151) internal successors, (866), 551 states have internal predecessors, (866), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1065 transitions. [2024-12-02 14:04:39,024 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1065 transitions. Word has length 125 [2024-12-02 14:04:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:39,025 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1065 transitions. [2024-12-02 14:04:39,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1065 transitions. [2024-12-02 14:04:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 14:04:39,026 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:39,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:39,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 14:04:39,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 14:04:39,227 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:39,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1096911377, now seen corresponding path program 1 times [2024-12-02 14:04:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559780241] [2024-12-02 14:04:39,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:04:39,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:39,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559780241] [2024-12-02 14:04:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559780241] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:39,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163240037] [2024-12-02 14:04:39,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:39,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:39,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:39,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:39,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 14:04:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:39,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:04:39,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:39,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:39,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163240037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:39,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:39,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 14:04:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212815193] [2024-12-02 14:04:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:39,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:39,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:39,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:39,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:39,655 INFO L87 Difference]: Start difference. First operand 659 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:39,691 INFO L93 Difference]: Finished difference Result 1256 states and 2051 transitions. [2024-12-02 14:04:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:04:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2024-12-02 14:04:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:39,695 INFO L225 Difference]: With dead ends: 1256 [2024-12-02 14:04:39,695 INFO L226 Difference]: Without dead ends: 683 [2024-12-02 14:04:39,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:39,696 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 7 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:39,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2690 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-12-02 14:04:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2024-12-02 14:04:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 552 states have (on average 1.6195652173913044) internal successors, (894), 575 states have internal predecessors, (894), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1093 transitions. [2024-12-02 14:04:39,714 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1093 transitions. Word has length 126 [2024-12-02 14:04:39,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:39,714 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1093 transitions. [2024-12-02 14:04:39,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1093 transitions. [2024-12-02 14:04:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:04:39,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:39,717 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:39,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 14:04:39,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 14:04:39,917 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:39,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2084118076, now seen corresponding path program 1 times [2024-12-02 14:04:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:39,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765122408] [2024-12-02 14:04:39,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:39,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 14:04:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765122408] [2024-12-02 14:04:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765122408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109812229] [2024-12-02 14:04:40,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:40,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:40,010 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:40,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 14:04:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:40,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:04:40,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:40,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109812229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:40,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 14:04:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610340975] [2024-12-02 14:04:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:40,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:04:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:40,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:04:40,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:40,362 INFO L87 Difference]: Start difference. First operand 683 states and 1093 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:40,470 INFO L93 Difference]: Finished difference Result 1190 states and 1930 transitions. [2024-12-02 14:04:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:04:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2024-12-02 14:04:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:40,476 INFO L225 Difference]: With dead ends: 1190 [2024-12-02 14:04:40,476 INFO L226 Difference]: Without dead ends: 709 [2024-12-02 14:04:40,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:04:40,478 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 119 mSDsluCounter, 5273 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:40,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6168 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-12-02 14:04:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 683. [2024-12-02 14:04:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 552 states have (on average 1.6195652173913044) internal successors, (894), 575 states have internal predecessors, (894), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1093 transitions. [2024-12-02 14:04:40,499 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1093 transitions. Word has length 127 [2024-12-02 14:04:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:40,499 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1093 transitions. [2024-12-02 14:04:40,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:04:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1093 transitions. [2024-12-02 14:04:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:04:40,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:40,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:40,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 14:04:40,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 14:04:40,702 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:40,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 409153654, now seen corresponding path program 1 times [2024-12-02 14:04:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:40,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449075957] [2024-12-02 14:04:40,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 14:04:40,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449075957] [2024-12-02 14:04:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449075957] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628172635] [2024-12-02 14:04:40,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:40,795 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:40,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 14:04:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:41,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:04:41,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:04:41,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628172635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-02 14:04:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90674478] [2024-12-02 14:04:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:41,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:04:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:41,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:04:41,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:41,136 INFO L87 Difference]: Start difference. First operand 683 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:41,163 INFO L93 Difference]: Finished difference Result 1162 states and 1891 transitions. [2024-12-02 14:04:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:41,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 14:04:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:41,166 INFO L225 Difference]: With dead ends: 1162 [2024-12-02 14:04:41,166 INFO L226 Difference]: Without dead ends: 686 [2024-12-02 14:04:41,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 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 14:04:41,168 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:41,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3648 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-12-02 14:04:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2024-12-02 14:04:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 555 states have (on average 1.6162162162162161) internal successors, (897), 578 states have internal predecessors, (897), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1096 transitions. [2024-12-02 14:04:41,180 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1096 transitions. Word has length 127 [2024-12-02 14:04:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:41,180 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1096 transitions. [2024-12-02 14:04:41,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:04:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1096 transitions. [2024-12-02 14:04:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 14:04:41,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:41,182 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:41,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 14:04:41,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:41,383 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:41,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1840490920, now seen corresponding path program 1 times [2024-12-02 14:04:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216425685] [2024-12-02 14:04:41,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:41,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216425685] [2024-12-02 14:04:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216425685] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284886790] [2024-12-02 14:04:41,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:41,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:41,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:41,467 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:41,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 14:04:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:41,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:04:41,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:41,965 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:41,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284886790] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:41,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:41,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 14:04:41,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995069399] [2024-12-02 14:04:41,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:41,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:04:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:41,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:04:41,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:41,967 INFO L87 Difference]: Start difference. First operand 686 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 14:04:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:42,301 INFO L93 Difference]: Finished difference Result 734 states and 1167 transitions. [2024-12-02 14:04:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 130 [2024-12-02 14:04:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:42,307 INFO L225 Difference]: With dead ends: 734 [2024-12-02 14:04:42,307 INFO L226 Difference]: Without dead ends: 719 [2024-12-02 14:04:42,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:42,308 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 848 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:42,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1660 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:04:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-12-02 14:04:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 688. [2024-12-02 14:04:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 557 states have (on average 1.614003590664273) internal successors, (899), 580 states have internal predecessors, (899), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1098 transitions. [2024-12-02 14:04:42,329 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1098 transitions. Word has length 130 [2024-12-02 14:04:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:42,330 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1098 transitions. [2024-12-02 14:04:42,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 14:04:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1098 transitions. [2024-12-02 14:04:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 14:04:42,332 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:42,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:42,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 14:04:42,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:42,533 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:42,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1838196941, now seen corresponding path program 1 times [2024-12-02 14:04:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442610297] [2024-12-02 14:04:42,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:42,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:42,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442610297] [2024-12-02 14:04:42,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442610297] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:42,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780034240] [2024-12-02 14:04:42,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:42,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:42,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:42,608 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:42,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 14:04:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:42,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:04:42,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:42,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780034240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-02 14:04:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069445005] [2024-12-02 14:04:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:42,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:04:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:42,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:04:42,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:42,955 INFO L87 Difference]: Start difference. First operand 688 states and 1098 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:04:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:42,972 INFO L93 Difference]: Finished difference Result 703 states and 1116 transitions. [2024-12-02 14:04:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 136 [2024-12-02 14:04:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:42,976 INFO L225 Difference]: With dead ends: 703 [2024-12-02 14:04:42,976 INFO L226 Difference]: Without dead ends: 688 [2024-12-02 14:04:42,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 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 14:04:42,976 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:42,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3652 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-12-02 14:04:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2024-12-02 14:04:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 557 states have (on average 1.6122082585278277) internal successors, (898), 580 states have internal predecessors, (898), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-12-02 14:04:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1097 transitions. [2024-12-02 14:04:42,997 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1097 transitions. Word has length 136 [2024-12-02 14:04:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:42,997 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1097 transitions. [2024-12-02 14:04:42,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 14:04:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1097 transitions. [2024-12-02 14:04:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 14:04:43,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:43,000 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:43,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 14:04:43,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:43,201 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:43,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash -278471638, now seen corresponding path program 1 times [2024-12-02 14:04:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:43,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733262317] [2024-12-02 14:04:43,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:43,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733262317] [2024-12-02 14:04:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733262317] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:43,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952435645] [2024-12-02 14:04:43,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:43,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:43,283 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:43,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 14:04:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:43,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:04:43,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:04:43,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952435645] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:43,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:43,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 14:04:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494150976] [2024-12-02 14:04:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:43,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:43,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:43,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:04:43,678 INFO L87 Difference]: Start difference. First operand 688 states and 1097 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:43,724 INFO L93 Difference]: Finished difference Result 1350 states and 2164 transitions. [2024-12-02 14:04:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2024-12-02 14:04:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:43,729 INFO L225 Difference]: With dead ends: 1350 [2024-12-02 14:04:43,729 INFO L226 Difference]: Without dead ends: 657 [2024-12-02 14:04:43,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:04:43,732 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 7 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:43,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2717 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-12-02 14:04:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-12-02 14:04:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 529 states have (on average 1.610586011342155) internal successors, (852), 550 states have internal predecessors, (852), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1047 transitions. [2024-12-02 14:04:43,747 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1047 transitions. Word has length 147 [2024-12-02 14:04:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:43,747 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1047 transitions. [2024-12-02 14:04:43,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1047 transitions. [2024-12-02 14:04:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 14:04:43,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:43,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:43,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 14:04:43,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:43,949 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:43,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1965378443, now seen corresponding path program 1 times [2024-12-02 14:04:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:43,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437397695] [2024-12-02 14:04:43,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:04:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437397695] [2024-12-02 14:04:44,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437397695] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814804880] [2024-12-02 14:04:44,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:44,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:44,091 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:44,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 14:04:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:44,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 14:04:44,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:04:44,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814804880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:44,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-02 14:04:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564966103] [2024-12-02 14:04:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:44,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:04:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:44,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:04:44,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:44,453 INFO L87 Difference]: Start difference. First operand 657 states and 1047 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:44,514 INFO L93 Difference]: Finished difference Result 1283 states and 2058 transitions. [2024-12-02 14:04:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2024-12-02 14:04:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:44,519 INFO L225 Difference]: With dead ends: 1283 [2024-12-02 14:04:44,519 INFO L226 Difference]: Without dead ends: 657 [2024-12-02 14:04:44,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:04:44,521 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 119 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:44,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5430 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-12-02 14:04:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 636. [2024-12-02 14:04:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 508 states have (on average 1.610236220472441) internal successors, (818), 529 states have internal predecessors, (818), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1013 transitions. [2024-12-02 14:04:44,536 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1013 transitions. Word has length 149 [2024-12-02 14:04:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:44,537 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1013 transitions. [2024-12-02 14:04:44,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1013 transitions. [2024-12-02 14:04:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 14:04:44,540 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:44,540 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:44,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-12-02 14:04:44,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 14:04:44,740 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:44,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1995921296, now seen corresponding path program 1 times [2024-12-02 14:04:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923418616] [2024-12-02 14:04:44,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:44,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923418616] [2024-12-02 14:04:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923418616] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:04:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871868922] [2024-12-02 14:04:44,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:04:44,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:04:44,846 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:04:44,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 14:04:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:45,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:04:45,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:04:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:04:45,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:04:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871868922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:45,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:04:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 14:04:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586175466] [2024-12-02 14:04:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:45,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:45,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:45,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:04:45,189 INFO L87 Difference]: Start difference. First operand 636 states and 1013 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:45,267 INFO L93 Difference]: Finished difference Result 1265 states and 2028 transitions. [2024-12-02 14:04:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:45,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2024-12-02 14:04:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:45,271 INFO L225 Difference]: With dead ends: 1265 [2024-12-02 14:04:45,271 INFO L226 Difference]: Without dead ends: 660 [2024-12-02 14:04:45,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:04:45,272 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 128 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:45,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2596 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-12-02 14:04:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 636. [2024-12-02 14:04:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 508 states have (on average 1.608267716535433) internal successors, (817), 529 states have internal predecessors, (817), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-12-02 14:04:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1012 transitions. [2024-12-02 14:04:45,286 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1012 transitions. Word has length 151 [2024-12-02 14:04:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:45,286 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1012 transitions. [2024-12-02 14:04:45,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1012 transitions. [2024-12-02 14:04:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 14:04:45,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:45,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:45,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 14:04:45,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 14:04:45,490 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:45,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -812107320, now seen corresponding path program 1 times [2024-12-02 14:04:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615065781] [2024-12-02 14:04:45,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:04:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:45,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615065781] [2024-12-02 14:04:45,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615065781] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:45,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:04:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303963481] [2024-12-02 14:04:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:45,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:04:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:45,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:04:45,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:04:45,557 INFO L87 Difference]: Start difference. First operand 636 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:45,585 INFO L93 Difference]: Finished difference Result 1200 states and 1937 transitions. [2024-12-02 14:04:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:04:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2024-12-02 14:04:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:45,590 INFO L225 Difference]: With dead ends: 1200 [2024-12-02 14:04:45,590 INFO L226 Difference]: Without dead ends: 596 [2024-12-02 14:04:45,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:04:45,591 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 8 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:45,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2714 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-12-02 14:04:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2024-12-02 14:04:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 471 states have (on average 1.6008492569002124) internal successors, (754), 490 states have internal predecessors, (754), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 945 transitions. [2024-12-02 14:04:45,609 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 945 transitions. Word has length 152 [2024-12-02 14:04:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:45,610 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 945 transitions. [2024-12-02 14:04:45,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:04:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 945 transitions. [2024-12-02 14:04:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:04:45,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:45,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:45,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 14:04:45,613 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:45,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1305995544, now seen corresponding path program 1 times [2024-12-02 14:04:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:45,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580778911] [2024-12-02 14:04:45,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 14:04:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580778911] [2024-12-02 14:04:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580778911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:04:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555026416] [2024-12-02 14:04:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:45,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:04:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:45,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:04:45,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:04:45,793 INFO L87 Difference]: Start difference. First operand 596 states and 945 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:45,862 INFO L93 Difference]: Finished difference Result 1103 states and 1776 transitions. [2024-12-02 14:04:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2024-12-02 14:04:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:45,866 INFO L225 Difference]: With dead ends: 1103 [2024-12-02 14:04:45,866 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 14:04:45,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:04:45,868 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 88 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:45,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5256 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:04:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 14:04:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-12-02 14:04:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 457 states have (on average 1.5951859956236323) internal successors, (729), 476 states have internal predecessors, (729), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 920 transitions. [2024-12-02 14:04:45,879 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 920 transitions. Word has length 153 [2024-12-02 14:04:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:45,880 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 920 transitions. [2024-12-02 14:04:45,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 920 transitions. [2024-12-02 14:04:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:04:45,881 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:45,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:45,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 14:04:45,882 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:45,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 331280001, now seen corresponding path program 1 times [2024-12-02 14:04:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084933280] [2024-12-02 14:04:45,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084933280] [2024-12-02 14:04:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084933280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:46,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:46,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:04:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577467011] [2024-12-02 14:04:46,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:46,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:04:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:46,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:04:46,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:46,098 INFO L87 Difference]: Start difference. First operand 582 states and 920 transitions. Second operand has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:46,216 INFO L93 Difference]: Finished difference Result 1130 states and 1804 transitions. [2024-12-02 14:04:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:04:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 154 [2024-12-02 14:04:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:46,219 INFO L225 Difference]: With dead ends: 1130 [2024-12-02 14:04:46,219 INFO L226 Difference]: Without dead ends: 573 [2024-12-02 14:04:46,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:04:46,221 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 45 mSDsluCounter, 5900 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6749 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:46,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6749 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-12-02 14:04:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-12-02 14:04:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 448 states have (on average 1.59375) internal successors, (714), 467 states have internal predecessors, (714), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 905 transitions. [2024-12-02 14:04:46,238 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 905 transitions. Word has length 154 [2024-12-02 14:04:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:46,238 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 905 transitions. [2024-12-02 14:04:46,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 905 transitions. [2024-12-02 14:04:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 14:04:46,241 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:46,241 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:46,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:04:46,241 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:46,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1604435983, now seen corresponding path program 1 times [2024-12-02 14:04:46,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:46,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983975040] [2024-12-02 14:04:46,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:46,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:04:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983975040] [2024-12-02 14:04:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983975040] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:46,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:04:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546344599] [2024-12-02 14:04:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:46,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:04:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:46,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:04:46,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:46,532 INFO L87 Difference]: Start difference. First operand 573 states and 905 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:46,658 INFO L93 Difference]: Finished difference Result 1062 states and 1710 transitions. [2024-12-02 14:04:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:04:46,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 155 [2024-12-02 14:04:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:46,663 INFO L225 Difference]: With dead ends: 1062 [2024-12-02 14:04:46,663 INFO L226 Difference]: Without dead ends: 567 [2024-12-02 14:04:46,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:04:46,666 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 31 mSDsluCounter, 6816 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7674 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:46,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7674 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:04:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-12-02 14:04:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2024-12-02 14:04:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.5995475113122173) internal successors, (707), 461 states have internal predecessors, (707), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 14:04:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 898 transitions. [2024-12-02 14:04:46,677 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 898 transitions. Word has length 155 [2024-12-02 14:04:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:46,678 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 898 transitions. [2024-12-02 14:04:46,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 14:04:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 898 transitions. [2024-12-02 14:04:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 14:04:46,679 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:46,679 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:46,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 14:04:46,679 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:46,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1181599633, now seen corresponding path program 1 times [2024-12-02 14:04:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374350924] [2024-12-02 14:04:46,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:46,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:46,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374350924] [2024-12-02 14:04:46,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374350924] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:46,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:46,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:04:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155458887] [2024-12-02 14:04:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:46,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:04:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:46,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:04:46,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:46,841 INFO L87 Difference]: Start difference. First operand 567 states and 898 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:49,063 INFO L93 Difference]: Finished difference Result 1770 states and 2930 transitions. [2024-12-02 14:04:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 155 [2024-12-02 14:04:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:49,073 INFO L225 Difference]: With dead ends: 1770 [2024-12-02 14:04:49,073 INFO L226 Difference]: Without dead ends: 1289 [2024-12-02 14:04:49,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:49,076 INFO L435 NwaCegarLoop]: 679 mSDtfsCounter, 3232 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:49,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 1752 Invalid, 4230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 14:04:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-12-02 14:04:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1127. [2024-12-02 14:04:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 860 states have (on average 1.6174418604651162) internal successors, (1391), 900 states have internal predecessors, (1391), 218 states have call successors, (218), 46 states have call predecessors, (218), 48 states have return successors, (222), 211 states have call predecessors, (222), 213 states have call successors, (222) [2024-12-02 14:04:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1831 transitions. [2024-12-02 14:04:49,129 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1831 transitions. Word has length 155 [2024-12-02 14:04:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:49,129 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1831 transitions. [2024-12-02 14:04:49,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1831 transitions. [2024-12-02 14:04:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:04:49,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:49,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:49,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 14:04:49,133 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:49,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -675006308, now seen corresponding path program 1 times [2024-12-02 14:04:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381884739] [2024-12-02 14:04:49,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381884739] [2024-12-02 14:04:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381884739] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:04:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410925516] [2024-12-02 14:04:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:04:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:49,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:04:49,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:49,305 INFO L87 Difference]: Start difference. First operand 1127 states and 1831 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:51,407 INFO L93 Difference]: Finished difference Result 3967 states and 6669 transitions. [2024-12-02 14:04:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 156 [2024-12-02 14:04:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:51,419 INFO L225 Difference]: With dead ends: 3967 [2024-12-02 14:04:51,419 INFO L226 Difference]: Without dead ends: 2929 [2024-12-02 14:04:51,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:51,423 INFO L435 NwaCegarLoop]: 678 mSDtfsCounter, 3245 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 4217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:51,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3288 Valid, 1765 Invalid, 4217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 3349 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:04:51,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2024-12-02 14:04:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2502. [2024-12-02 14:04:51,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1865 states have (on average 1.6198391420911529) internal successors, (3021), 1960 states have internal predecessors, (3021), 538 states have call successors, (538), 84 states have call predecessors, (538), 98 states have return successors, (581), 533 states have call predecessors, (581), 533 states have call successors, (581) [2024-12-02 14:04:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4140 transitions. [2024-12-02 14:04:51,524 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4140 transitions. Word has length 156 [2024-12-02 14:04:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:51,524 INFO L471 AbstractCegarLoop]: Abstraction has 2502 states and 4140 transitions. [2024-12-02 14:04:51,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4140 transitions. [2024-12-02 14:04:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 14:04:51,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:51,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:51,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 14:04:51,527 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 361237366, now seen corresponding path program 1 times [2024-12-02 14:04:51,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244527353] [2024-12-02 14:04:51,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:51,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244527353] [2024-12-02 14:04:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244527353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:51,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:04:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413258662] [2024-12-02 14:04:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:51,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:04:51,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:51,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:04:51,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:51,643 INFO L87 Difference]: Start difference. First operand 2502 states and 4140 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:53,975 INFO L93 Difference]: Finished difference Result 9717 states and 16542 transitions. [2024-12-02 14:04:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 157 [2024-12-02 14:04:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:54,020 INFO L225 Difference]: With dead ends: 9717 [2024-12-02 14:04:54,020 INFO L226 Difference]: Without dead ends: 7310 [2024-12-02 14:04:54,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:54,034 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 3257 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 4225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:54,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 1786 Invalid, 4225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:04:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2024-12-02 14:04:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 6053. [2024-12-02 14:04:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6053 states, 4417 states have (on average 1.61376499886801) internal successors, (7128), 4660 states have internal predecessors, (7128), 1418 states have call successors, (1418), 160 states have call predecessors, (1418), 217 states have return successors, (1610), 1423 states have call predecessors, (1610), 1413 states have call successors, (1610) [2024-12-02 14:04:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 10156 transitions. [2024-12-02 14:04:54,334 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 10156 transitions. Word has length 157 [2024-12-02 14:04:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:54,335 INFO L471 AbstractCegarLoop]: Abstraction has 6053 states and 10156 transitions. [2024-12-02 14:04:54,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 10156 transitions. [2024-12-02 14:04:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 14:04:54,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:54,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:54,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 14:04:54,337 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:54,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash 881505889, now seen corresponding path program 1 times [2024-12-02 14:04:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:54,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360773097] [2024-12-02 14:04:54,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360773097] [2024-12-02 14:04:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360773097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:54,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:04:54,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23584097] [2024-12-02 14:04:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:54,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:04:54,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:54,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:04:54,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:54,452 INFO L87 Difference]: Start difference. First operand 6053 states and 10156 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:57,432 INFO L93 Difference]: Finished difference Result 25491 states and 43844 transitions. [2024-12-02 14:04:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:04:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 158 [2024-12-02 14:04:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:57,548 INFO L225 Difference]: With dead ends: 25491 [2024-12-02 14:04:57,548 INFO L226 Difference]: Without dead ends: 19545 [2024-12-02 14:04:57,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:04:57,575 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 3269 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 3361 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 3361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:57,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 1807 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 3361 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:04:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19545 states. [2024-12-02 14:04:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19545 to 15688. [2024-12-02 14:04:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15688 states, 11269 states have (on average 1.605377584523915) internal successors, (18091), 11920 states have internal predecessors, (18091), 3902 states have call successors, (3902), 312 states have call predecessors, (3902), 516 states have return successors, (4625), 3945 states have call predecessors, (4625), 3897 states have call successors, (4625) [2024-12-02 14:04:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15688 states to 15688 states and 26618 transitions. [2024-12-02 14:04:58,489 INFO L78 Accepts]: Start accepts. Automaton has 15688 states and 26618 transitions. Word has length 158 [2024-12-02 14:04:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:58,490 INFO L471 AbstractCegarLoop]: Abstraction has 15688 states and 26618 transitions. [2024-12-02 14:04:58,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:04:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15688 states and 26618 transitions. [2024-12-02 14:04:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 14:04:58,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:58,493 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:04:58,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 14:04:58,493 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:58,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1708553381, now seen corresponding path program 1 times [2024-12-02 14:04:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967333808] [2024-12-02 14:04:58,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:04:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:04:58,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:04:58,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967333808] [2024-12-02 14:04:58,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967333808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:04:58,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:04:58,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:04:58,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022508612] [2024-12-02 14:04:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:04:58,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:04:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:04:58,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:04:58,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:04:58,605 INFO L87 Difference]: Start difference. First operand 15688 states and 26618 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:05:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:05:03,577 INFO L93 Difference]: Finished difference Result 70541 states and 122300 transitions. [2024-12-02 14:05:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:05:03,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2024-12-02 14:05:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:05:03,807 INFO L225 Difference]: With dead ends: 70541 [2024-12-02 14:05:03,807 INFO L226 Difference]: Without dead ends: 54984 [2024-12-02 14:05:03,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:05:03,870 INFO L435 NwaCegarLoop]: 696 mSDtfsCounter, 3281 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:05:03,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3327 Valid, 1828 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:05:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54984 states. [2024-12-02 14:05:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54984 to 42971. [2024-12-02 14:05:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42971 states, 30601 states have (on average 1.5983137805954053) internal successors, (48910), 32400 states have internal predecessors, (48910), 11058 states have call successors, (11058), 616 states have call predecessors, (11058), 1311 states have return successors, (13590), 11231 states have call predecessors, (13590), 11053 states have call successors, (13590) [2024-12-02 14:05:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42971 states to 42971 states and 73558 transitions. [2024-12-02 14:05:06,798 INFO L78 Accepts]: Start accepts. Automaton has 42971 states and 73558 transitions. Word has length 159 [2024-12-02 14:05:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:05:06,799 INFO L471 AbstractCegarLoop]: Abstraction has 42971 states and 73558 transitions. [2024-12-02 14:05:06,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:05:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42971 states and 73558 transitions. [2024-12-02 14:05:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 14:05:06,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:05:06,802 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:05:06,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 14:05:06,802 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:05:06,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:05:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 253021277, now seen corresponding path program 1 times [2024-12-02 14:05:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:05:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662105437] [2024-12-02 14:05:06,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:05:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:05:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:05:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:06,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662105437] [2024-12-02 14:05:06,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662105437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:05:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460688840] [2024-12-02 14:05:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:06,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:05:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:06,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:05:06,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:05:06,975 INFO L87 Difference]: Start difference. First operand 42971 states and 73558 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:05:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:05:15,237 INFO L93 Difference]: Finished difference Result 138147 states and 236860 transitions. [2024-12-02 14:05:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 14:05:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2024-12-02 14:05:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:05:15,629 INFO L225 Difference]: With dead ends: 138147 [2024-12-02 14:05:15,629 INFO L226 Difference]: Without dead ends: 95355 [2024-12-02 14:05:15,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:05:15,773 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2472 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 5586 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 6137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 5586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:05:15,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 2972 Invalid, 6137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 5586 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 14:05:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95355 states. [2024-12-02 14:05:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95355 to 92498. [2024-12-02 14:05:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92498 states, 66339 states have (on average 1.5965570780385596) internal successors, (105914), 70027 states have internal predecessors, (105914), 23127 states have call successors, (23127), 1384 states have call predecessors, (23127), 3031 states have return successors, (28838), 23640 states have call predecessors, (28838), 23122 states have call successors, (28838) [2024-12-02 14:05:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92498 states to 92498 states and 157879 transitions. [2024-12-02 14:05:22,219 INFO L78 Accepts]: Start accepts. Automaton has 92498 states and 157879 transitions. Word has length 159 [2024-12-02 14:05:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:05:22,219 INFO L471 AbstractCegarLoop]: Abstraction has 92498 states and 157879 transitions. [2024-12-02 14:05:22,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 14:05:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 92498 states and 157879 transitions. [2024-12-02 14:05:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:05:22,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:05:22,223 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:05:22,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 14:05:22,224 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:05:22,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:05:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash -515399206, now seen corresponding path program 1 times [2024-12-02 14:05:22,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:05:22,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925686609] [2024-12-02 14:05:22,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:05:22,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:05:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:05:22,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:22,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925686609] [2024-12-02 14:05:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925686609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:05:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392377793] [2024-12-02 14:05:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:22,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:05:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:22,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:05:22,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:05:22,312 INFO L87 Difference]: Start difference. First operand 92498 states and 157879 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:05:27,077 INFO L93 Difference]: Finished difference Result 184819 states and 315546 transitions. [2024-12-02 14:05:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:05:27,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2024-12-02 14:05:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:05:27,705 INFO L225 Difference]: With dead ends: 184819 [2024-12-02 14:05:27,705 INFO L226 Difference]: Without dead ends: 92500 [2024-12-02 14:05:28,000 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 14:05:28,000 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 3 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:05:28,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2612 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:05:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92500 states. [2024-12-02 14:05:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92500 to 92490. [2024-12-02 14:05:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92490 states, 66334 states have (on average 1.596556818524437) internal successors, (105906), 70024 states have internal predecessors, (105906), 23124 states have call successors, (23124), 1384 states have call predecessors, (23124), 3031 states have return successors, (28833), 23635 states have call predecessors, (28833), 23119 states have call successors, (28833) [2024-12-02 14:05:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92490 states to 92490 states and 157863 transitions. [2024-12-02 14:05:33,973 INFO L78 Accepts]: Start accepts. Automaton has 92490 states and 157863 transitions. Word has length 165 [2024-12-02 14:05:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:05:33,973 INFO L471 AbstractCegarLoop]: Abstraction has 92490 states and 157863 transitions. [2024-12-02 14:05:33,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 92490 states and 157863 transitions. [2024-12-02 14:05:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:05:33,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:05:33,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:05:33,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 14:05:33,977 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:05:33,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:05:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -410458088, now seen corresponding path program 1 times [2024-12-02 14:05:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:05:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812000962] [2024-12-02 14:05:33,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:05:33,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:05:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:05:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812000962] [2024-12-02 14:05:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812000962] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:34,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:05:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210566552] [2024-12-02 14:05:34,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:34,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:05:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:34,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:05:34,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:05:34,126 INFO L87 Difference]: Start difference. First operand 92490 states and 157863 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:05:39,882 INFO L93 Difference]: Finished difference Result 185793 states and 317160 transitions. [2024-12-02 14:05:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:05:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2024-12-02 14:05:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:05:40,316 INFO L225 Difference]: With dead ends: 185793 [2024-12-02 14:05:40,316 INFO L226 Difference]: Without dead ends: 93482 [2024-12-02 14:05:40,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 14:05:40,578 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 0 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:05:40,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5219 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:05:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93482 states. [2024-12-02 14:05:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93482 to 93162. [2024-12-02 14:05:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93162 states, 66814 states have (on average 1.5922710809111862) internal successors, (106386), 70504 states have internal predecessors, (106386), 23124 states have call successors, (23124), 1384 states have call predecessors, (23124), 3223 states have return successors, (29310), 23827 states have call predecessors, (29310), 23119 states have call successors, (29310) [2024-12-02 14:05:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93162 states to 93162 states and 158820 transitions. [2024-12-02 14:05:45,932 INFO L78 Accepts]: Start accepts. Automaton has 93162 states and 158820 transitions. Word has length 165 [2024-12-02 14:05:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:05:45,933 INFO L471 AbstractCegarLoop]: Abstraction has 93162 states and 158820 transitions. [2024-12-02 14:05:45,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 93162 states and 158820 transitions. [2024-12-02 14:05:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 14:05:45,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:05:45,938 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:05:45,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 14:05:45,939 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:05:45,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:05:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1490615141, now seen corresponding path program 1 times [2024-12-02 14:05:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:05:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194570378] [2024-12-02 14:05:45,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:05:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:05:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:05:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194570378] [2024-12-02 14:05:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194570378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:46,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:46,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:05:46,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111322563] [2024-12-02 14:05:46,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:46,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:05:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:46,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:05:46,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:05:46,071 INFO L87 Difference]: Start difference. First operand 93162 states and 158820 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:05:51,432 INFO L93 Difference]: Finished difference Result 186945 states and 318693 transitions. [2024-12-02 14:05:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:05:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2024-12-02 14:05:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:05:51,932 INFO L225 Difference]: With dead ends: 186945 [2024-12-02 14:05:51,932 INFO L226 Difference]: Without dead ends: 93962 [2024-12-02 14:05:52,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 14:05:52,253 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 0 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:05:52,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5219 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:05:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93962 states. [2024-12-02 14:05:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93962 to 93258. [2024-12-02 14:05:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93258 states, 66910 states have (on average 1.591421312210432) internal successors, (106482), 70504 states have internal predecessors, (106482), 23124 states have call successors, (23124), 1384 states have call predecessors, (23124), 3223 states have return successors, (29310), 23923 states have call predecessors, (29310), 23119 states have call successors, (29310) [2024-12-02 14:05:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93258 states to 93258 states and 158916 transitions. [2024-12-02 14:05:58,342 INFO L78 Accepts]: Start accepts. Automaton has 93258 states and 158916 transitions. Word has length 164 [2024-12-02 14:05:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:05:58,342 INFO L471 AbstractCegarLoop]: Abstraction has 93258 states and 158916 transitions. [2024-12-02 14:05:58,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:05:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 93258 states and 158916 transitions. [2024-12-02 14:05:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 14:05:58,346 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:05:58,346 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:05:58,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 14:05:58,346 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:05:58,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:05:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash -844491766, now seen corresponding path program 1 times [2024-12-02 14:05:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:05:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981955964] [2024-12-02 14:05:58,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:05:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:05:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:05:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981955964] [2024-12-02 14:05:58,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981955964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:58,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:58,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:05:58,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778766446] [2024-12-02 14:05:58,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:58,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:05:58,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:58,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:05:58,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:05:58,515 INFO L87 Difference]: Start difference. First operand 93258 states and 158916 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 8 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 14:06:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:06:12,891 INFO L93 Difference]: Finished difference Result 323795 states and 556119 transitions. [2024-12-02 14:06:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:06:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 8 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 174 [2024-12-02 14:06:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:06:13,909 INFO L225 Difference]: With dead ends: 323795 [2024-12-02 14:06:13,909 INFO L226 Difference]: Without dead ends: 230716 [2024-12-02 14:06:14,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:06:14,210 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 3932 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 3981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:06:14,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 1513 Invalid, 3981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:06:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230716 states. [2024-12-02 14:06:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230716 to 229694. [2024-12-02 14:06:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229694 states, 163905 states have (on average 1.584759464323846) internal successors, (259750), 173009 states have internal predecessors, (259750), 57758 states have call successors, (57758), 3400 states have call predecessors, (57758), 8030 states have return successors, (75063), 59541 states have call predecessors, (75063), 57753 states have call successors, (75063) [2024-12-02 14:06:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229694 states to 229694 states and 392571 transitions. [2024-12-02 14:06:29,708 INFO L78 Accepts]: Start accepts. Automaton has 229694 states and 392571 transitions. Word has length 174 [2024-12-02 14:06:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:06:29,709 INFO L471 AbstractCegarLoop]: Abstraction has 229694 states and 392571 transitions. [2024-12-02 14:06:29,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 8 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-12-02 14:06:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 229694 states and 392571 transitions. [2024-12-02 14:06:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:06:29,713 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:06:29,714 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:06:29,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 14:06:29,714 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:06:29,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:06:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1693386209, now seen corresponding path program 1 times [2024-12-02 14:06:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:06:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567935452] [2024-12-02 14:06:29,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:06:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:06:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:06:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:06:29,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:06:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567935452] [2024-12-02 14:06:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567935452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:06:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111744840] [2024-12-02 14:06:29,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:06:29,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:06:29,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:06:29,970 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:06:29,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 14:06:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:06:30,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:06:30,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:06:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:06:30,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:06:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111744840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:06:30,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:06:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 14:06:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045963175] [2024-12-02 14:06:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:06:30,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:06:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:06:30,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:06:30,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:06:30,339 INFO L87 Difference]: Start difference. First operand 229694 states and 392571 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:06:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:06:45,459 INFO L93 Difference]: Finished difference Result 460806 states and 792881 transitions. [2024-12-02 14:06:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:06:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2024-12-02 14:06:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:06:46,801 INFO L225 Difference]: With dead ends: 460806 [2024-12-02 14:06:46,801 INFO L226 Difference]: Without dead ends: 231230 [2024-12-02 14:06:47,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:06:47,661 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 14 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:06:47,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2546 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:06:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231230 states. [2024-12-02 14:07:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231230 to 231230. [2024-12-02 14:07:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231230 states, 165249 states have (on average 1.5856192775750535) internal successors, (262022), 174353 states have internal predecessors, (262022), 57758 states have call successors, (57758), 3592 states have call predecessors, (57758), 8222 states have return successors, (75223), 59541 states have call predecessors, (75223), 57753 states have call successors, (75223) [2024-12-02 14:07:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231230 states to 231230 states and 395003 transitions. [2024-12-02 14:07:03,068 INFO L78 Accepts]: Start accepts. Automaton has 231230 states and 395003 transitions. Word has length 176 [2024-12-02 14:07:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:07:03,069 INFO L471 AbstractCegarLoop]: Abstraction has 231230 states and 395003 transitions. [2024-12-02 14:07:03,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:07:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 231230 states and 395003 transitions. [2024-12-02 14:07:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:07:03,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:07:03,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:07:03,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-12-02 14:07:03,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c5c267-e7b6-43f2-8041-a4871f872bfe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 14:07:03,277 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:07:03,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:07:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash 455278208, now seen corresponding path program 1 times [2024-12-02 14:07:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:07:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968840795] [2024-12-02 14:07:03,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:07:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:07:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:07:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:07:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:07:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968840795] [2024-12-02 14:07:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968840795] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:07:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:07:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:07:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669409662] [2024-12-02 14:07:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:07:03,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:07:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:07:03,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:07:03,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:07:03,469 INFO L87 Difference]: Start difference. First operand 231230 states and 395003 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 14:07:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:07:20,214 INFO L93 Difference]: Finished difference Result 431344 states and 737662 transitions. [2024-12-02 14:07:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:07:20,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2024-12-02 14:07:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:07:21,446 INFO L225 Difference]: With dead ends: 431344 [2024-12-02 14:07:21,446 INFO L226 Difference]: Without dead ends: 241407 [2024-12-02 14:07:22,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:07:22,015 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 2116 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:07:22,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 1668 Invalid, 3872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:07:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241407 states. [2024-12-02 14:07:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241407 to 234782. [2024-12-02 14:07:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234782 states, 167873 states have (on average 1.5812310496625426) internal successors, (265446), 177233 states have internal predecessors, (265446), 58110 states have call successors, (58110), 3912 states have call predecessors, (58110), 8798 states have return successors, (76310), 59893 states have call predecessors, (76310), 58105 states have call successors, (76310) [2024-12-02 14:07:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234782 states to 234782 states and 399866 transitions. [2024-12-02 14:07:37,583 INFO L78 Accepts]: Start accepts. Automaton has 234782 states and 399866 transitions. Word has length 176 [2024-12-02 14:07:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:07:37,583 INFO L471 AbstractCegarLoop]: Abstraction has 234782 states and 399866 transitions. [2024-12-02 14:07:37,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 14:07:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 234782 states and 399866 transitions. [2024-12-02 14:07:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 14:07:37,588 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:07:37,588 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:07:37,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 14:07:37,589 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:07:37,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:07:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 138253724, now seen corresponding path program 1 times [2024-12-02 14:07:37,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:07:37,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233547135] [2024-12-02 14:07:37,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:07:37,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:07:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:07:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 14:07:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:07:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233547135] [2024-12-02 14:07:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233547135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:07:37,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:07:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:07:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723773836] [2024-12-02 14:07:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:07:37,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:07:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:07:37,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:07:37,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:07:37,809 INFO L87 Difference]: Start difference. First operand 234782 states and 399866 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:07:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:07:55,889 INFO L93 Difference]: Finished difference Result 470528 states and 802333 transitions. [2024-12-02 14:07:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:07:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 182 [2024-12-02 14:07:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:07:57,344 INFO L225 Difference]: With dead ends: 470528 [2024-12-02 14:07:57,344 INFO L226 Difference]: Without dead ends: 235934 [2024-12-02 14:07:57,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:07:57,980 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 1295 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:07:57,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1691 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:07:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235934 states. [2024-12-02 14:08:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235934 to 235422. [2024-12-02 14:08:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235422 states, 168353 states have (on average 1.5795738715674803) internal successors, (265926), 177713 states have internal predecessors, (265926), 58110 states have call successors, (58110), 3912 states have call predecessors, (58110), 8958 states have return successors, (76598), 60053 states have call predecessors, (76598), 58105 states have call successors, (76598) [2024-12-02 14:08:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235422 states to 235422 states and 400634 transitions. [2024-12-02 14:08:14,598 INFO L78 Accepts]: Start accepts. Automaton has 235422 states and 400634 transitions. Word has length 182 [2024-12-02 14:08:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:08:14,598 INFO L471 AbstractCegarLoop]: Abstraction has 235422 states and 400634 transitions. [2024-12-02 14:08:14,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:08:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 235422 states and 400634 transitions. [2024-12-02 14:08:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:08:14,603 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:08:14,603 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:08:14,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 14:08:14,603 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:08:14,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:08:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash 808147854, now seen corresponding path program 1 times [2024-12-02 14:08:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:08:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024405964] [2024-12-02 14:08:14,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:08:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:08:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:08:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:08:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:08:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024405964] [2024-12-02 14:08:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024405964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:08:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:08:14,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:08:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257525332] [2024-12-02 14:08:14,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:08:14,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:08:14,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:08:14,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:08:14,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:08:14,688 INFO L87 Difference]: Start difference. First operand 235422 states and 400634 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-12-02 14:08:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:08:30,447 INFO L93 Difference]: Finished difference Result 471040 states and 804184 transitions. [2024-12-02 14:08:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:08:30,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 183 [2024-12-02 14:08:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:08:31,896 INFO L225 Difference]: With dead ends: 471040 [2024-12-02 14:08:31,896 INFO L226 Difference]: Without dead ends: 234334 [2024-12-02 14:08:32,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:08:32,829 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 12 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:08:32,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2521 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:08:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234334 states.