./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:31:29,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:31:29,623 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:31:29,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:31:29,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:31:29,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:31:29,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:31:29,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:31:29,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:31:29,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:31:29,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:31:29,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:31:29,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:31:29,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:31:29,652 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:31:29,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:31:29,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:31:29,654 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:29,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:31:29,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:29,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:31:29,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:31:29,656 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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/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 -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2024-12-02 11:31:29,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:31:29,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:31:29,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:31:29,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:31:29,908 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:31:29,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2024-12-02 11:31:32,509 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/data/80027e6a9/7377fbc8c7af46a6bcb8cbde0e1679c7/FLAGb6dedf162 [2024-12-02 11:31:32,823 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:31:32,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2024-12-02 11:31:32,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/data/80027e6a9/7377fbc8c7af46a6bcb8cbde0e1679c7/FLAGb6dedf162 [2024-12-02 11:31:33,102 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/data/80027e6a9/7377fbc8c7af46a6bcb8cbde0e1679c7 [2024-12-02 11:31:33,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:31:33,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:31:33,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:31:33,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:31:33,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:31:33,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42050d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33, skipping insertion in model container [2024-12-02 11:31:33,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:31:33,467 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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2024-12-02 11:31:33,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:31:33,554 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:31:33,563 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [408] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [620] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1287] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1477] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1843] [2024-12-02 11:31:33,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1878] [2024-12-02 11:31:33,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1893] [2024-12-02 11:31:33,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1902] [2024-12-02 11:31:33,631 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_566f5951-ab0d-4a3d-918e-c35a63ac55f8/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2024-12-02 11:31:33,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:31:33,693 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:31:33,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33 WrapperNode [2024-12-02 11:31:33,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:31:33,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:31:33,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:31:33,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:31:33,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,751 INFO L138 Inliner]: procedures = 86, calls = 334, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 748 [2024-12-02 11:31:33,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:31:33,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:31:33,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:31:33,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:31:33,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,790 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 11:31:33,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,807 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:31:33,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:31:33,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:31:33,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:31:33,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (1/1) ... [2024-12-02 11:31:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:31:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:33,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:31:33,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:31:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:31:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 11:31:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 11:31:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 11:31:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 11:31:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 11:31:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 11:31:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 11:31:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 11:31:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 11:31:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 11:31:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 11:31:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 11:31:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 11:31:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 11:31:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:31:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:31:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 11:31:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 11:31:34,063 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:31:34,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:31:35,084 INFO L? ?]: Removed 417 outVars from TransFormulas that were not future-live. [2024-12-02 11:31:35,085 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:31:35,105 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:31:35,105 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:31:35,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:31:35 BoogieIcfgContainer [2024-12-02 11:31:35,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:31:35,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:31:35,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:31:35,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:31:35,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:31:33" (1/3) ... [2024-12-02 11:31:35,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7082d63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:31:35, skipping insertion in model container [2024-12-02 11:31:35,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:31:33" (2/3) ... [2024-12-02 11:31:35,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7082d63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:31:35, skipping insertion in model container [2024-12-02 11:31:35,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:31:35" (3/3) ... [2024-12-02 11:31:35,114 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2024-12-02 11:31:35,125 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:31:35,127 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product01.cil.c that has 24 procedures, 545 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:31:35,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:31:35,192 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;@5fc7748, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:31:35,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:31:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 422 states have (on average 1.6943127962085307) internal successors, (715), 440 states have internal predecessors, (715), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 11:31:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 11:31:35,213 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:35,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:35,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:35,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1943532120, now seen corresponding path program 1 times [2024-12-02 11:31:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887732446] [2024-12-02 11:31:35,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887732446] [2024-12-02 11:31:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887732446] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:31:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208995875] [2024-12-02 11:31:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:35,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:31:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:35,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:31:35,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:35,910 INFO L87 Difference]: Start difference. First operand has 545 states, 422 states have (on average 1.6943127962085307) internal successors, (715), 440 states have internal predecessors, (715), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:36,149 INFO L93 Difference]: Finished difference Result 1087 states and 1834 transitions. [2024-12-02 11:31:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:31:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-12-02 11:31:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:36,165 INFO L225 Difference]: With dead ends: 1087 [2024-12-02 11:31:36,165 INFO L226 Difference]: Without dead ends: 550 [2024-12-02 11:31:36,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:31:36,175 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 91 mSDsluCounter, 4385 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5279 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:36,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5279 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-12-02 11:31:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2024-12-02 11:31:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6847058823529413) internal successors, (716), 443 states have internal predecessors, (716), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2024-12-02 11:31:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 913 transitions. [2024-12-02 11:31:36,258 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 913 transitions. Word has length 85 [2024-12-02 11:31:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:36,259 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 913 transitions. [2024-12-02 11:31:36,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 913 transitions. [2024-12-02 11:31:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 11:31:36,265 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:36,265 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:36,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:31:36,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:36,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1580001632, now seen corresponding path program 1 times [2024-12-02 11:31:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:36,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443894116] [2024-12-02 11:31:36,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:36,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443894116] [2024-12-02 11:31:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443894116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:36,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:31:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891189363] [2024-12-02 11:31:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:36,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:31:36,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:36,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:31:36,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:36,529 INFO L87 Difference]: Start difference. First operand 548 states and 913 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:36,651 INFO L93 Difference]: Finished difference Result 1091 states and 1829 transitions. [2024-12-02 11:31:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:31:36,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-12-02 11:31:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:36,656 INFO L225 Difference]: With dead ends: 1091 [2024-12-02 11:31:36,657 INFO L226 Difference]: Without dead ends: 559 [2024-12-02 11:31:36,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:31:36,660 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 90 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5274 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:36,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5274 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-12-02 11:31:36,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 548. [2024-12-02 11:31:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6847058823529413) internal successors, (716), 443 states have internal predecessors, (716), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2024-12-02 11:31:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 913 transitions. [2024-12-02 11:31:36,693 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 913 transitions. Word has length 86 [2024-12-02 11:31:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:36,693 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 913 transitions. [2024-12-02 11:31:36,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 913 transitions. [2024-12-02 11:31:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 11:31:36,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:36,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:36,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:31:36,697 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:36,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:36,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1165569115, now seen corresponding path program 1 times [2024-12-02 11:31:36,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:36,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434527759] [2024-12-02 11:31:36,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:36,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434527759] [2024-12-02 11:31:36,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434527759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:36,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:36,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325339688] [2024-12-02 11:31:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:36,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:36,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:36,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:36,843 INFO L87 Difference]: Start difference. First operand 548 states and 913 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:36,905 INFO L93 Difference]: Finished difference Result 1078 states and 1807 transitions. [2024-12-02 11:31:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:31:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-12-02 11:31:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:36,911 INFO L225 Difference]: With dead ends: 1078 [2024-12-02 11:31:36,911 INFO L226 Difference]: Without dead ends: 518 [2024-12-02 11:31:36,914 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 11:31:36,914 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 14 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:36,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2644 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-12-02 11:31:36,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-12-02 11:31:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 398 states have (on average 1.6683417085427135) internal successors, (664), 414 states have internal predecessors, (664), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 857 transitions. [2024-12-02 11:31:36,942 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 857 transitions. Word has length 86 [2024-12-02 11:31:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:36,942 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 857 transitions. [2024-12-02 11:31:36,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 857 transitions. [2024-12-02 11:31:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 11:31:36,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:36,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:36,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:31:36,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:36,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash 643059660, now seen corresponding path program 1 times [2024-12-02 11:31:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371153198] [2024-12-02 11:31:36,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:37,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371153198] [2024-12-02 11:31:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371153198] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:37,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:31:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150080693] [2024-12-02 11:31:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:31:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:37,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:31:37,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:37,130 INFO L87 Difference]: Start difference. First operand 518 states and 857 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:37,202 INFO L93 Difference]: Finished difference Result 1029 states and 1713 transitions. [2024-12-02 11:31:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:31:37,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-12-02 11:31:37,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:37,205 INFO L225 Difference]: With dead ends: 1029 [2024-12-02 11:31:37,206 INFO L226 Difference]: Without dead ends: 512 [2024-12-02 11:31:37,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:31:37,208 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 63 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:37,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5024 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-12-02 11:31:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2024-12-02 11:31:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 392 states have (on average 1.6607142857142858) internal successors, (651), 408 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 844 transitions. [2024-12-02 11:31:37,235 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 844 transitions. Word has length 87 [2024-12-02 11:31:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:37,235 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 844 transitions. [2024-12-02 11:31:37,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 844 transitions. [2024-12-02 11:31:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 11:31:37,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:37,237 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:37,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:31:37,237 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:37,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash -771325179, now seen corresponding path program 1 times [2024-12-02 11:31:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814047128] [2024-12-02 11:31:37,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814047128] [2024-12-02 11:31:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814047128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:37,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:37,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:31:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123156499] [2024-12-02 11:31:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:31:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:37,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:31:37,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:37,383 INFO L87 Difference]: Start difference. First operand 512 states and 844 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:37,457 INFO L93 Difference]: Finished difference Result 1017 states and 1687 transitions. [2024-12-02 11:31:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:31:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-12-02 11:31:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:37,460 INFO L225 Difference]: With dead ends: 1017 [2024-12-02 11:31:37,460 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 11:31:37,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:31:37,462 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 49 mSDsluCounter, 4129 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:37,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 4964 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 11:31:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-12-02 11:31:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 386 states have (on average 1.650259067357513) internal successors, (637), 402 states have internal predecessors, (637), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 830 transitions. [2024-12-02 11:31:37,481 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 830 transitions. Word has length 88 [2024-12-02 11:31:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:37,482 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 830 transitions. [2024-12-02 11:31:37,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 830 transitions. [2024-12-02 11:31:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 11:31:37,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:37,484 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:37,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:31:37,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:37,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1252745712, now seen corresponding path program 1 times [2024-12-02 11:31:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:37,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871223334] [2024-12-02 11:31:37,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:37,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871223334] [2024-12-02 11:31:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871223334] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790630683] [2024-12-02 11:31:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:37,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:37,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:37,598 INFO L87 Difference]: Start difference. First operand 506 states and 830 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:37,649 INFO L93 Difference]: Finished difference Result 996 states and 1646 transitions. [2024-12-02 11:31:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:31:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-12-02 11:31:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:37,654 INFO L225 Difference]: With dead ends: 996 [2024-12-02 11:31:37,654 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 11:31:37,656 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 11:31:37,657 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 15 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:37,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2430 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 11:31:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-12-02 11:31:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 386 states have (on average 1.6476683937823835) internal successors, (636), 402 states have internal predecessors, (636), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 829 transitions. [2024-12-02 11:31:37,678 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 829 transitions. Word has length 89 [2024-12-02 11:31:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:37,678 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 829 transitions. [2024-12-02 11:31:37,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 829 transitions. [2024-12-02 11:31:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 11:31:37,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:37,680 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:37,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:31:37,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:37,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1079955556, now seen corresponding path program 1 times [2024-12-02 11:31:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486498866] [2024-12-02 11:31:37,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:37,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486498866] [2024-12-02 11:31:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486498866] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:37,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:37,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154578564] [2024-12-02 11:31:37,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:37,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:37,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:37,775 INFO L87 Difference]: Start difference. First operand 506 states and 829 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:37,815 INFO L93 Difference]: Finished difference Result 996 states and 1644 transitions. [2024-12-02 11:31:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:31:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-12-02 11:31:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:37,818 INFO L225 Difference]: With dead ends: 996 [2024-12-02 11:31:37,818 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 11:31:37,821 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 11:31:37,821 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 14 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:37,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2432 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 11:31:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-12-02 11:31:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 386 states have (on average 1.645077720207254) internal successors, (635), 402 states have internal predecessors, (635), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 828 transitions. [2024-12-02 11:31:37,836 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 828 transitions. Word has length 90 [2024-12-02 11:31:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:37,837 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 828 transitions. [2024-12-02 11:31:37,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 828 transitions. [2024-12-02 11:31:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 11:31:37,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:37,838 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:37,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:31:37,838 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:37,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1124246155, now seen corresponding path program 1 times [2024-12-02 11:31:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056511375] [2024-12-02 11:31:37,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:37,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056511375] [2024-12-02 11:31:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056511375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:37,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042823677] [2024-12-02 11:31:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:37,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:37,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:37,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:37,931 INFO L87 Difference]: Start difference. First operand 506 states and 828 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:37,971 INFO L93 Difference]: Finished difference Result 996 states and 1642 transitions. [2024-12-02 11:31:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:31:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-12-02 11:31:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:37,975 INFO L225 Difference]: With dead ends: 996 [2024-12-02 11:31:37,976 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 11:31:37,978 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 11:31:37,978 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 13 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:37,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2434 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 11:31:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-12-02 11:31:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 386 states have (on average 1.6424870466321244) internal successors, (634), 402 states have internal predecessors, (634), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 827 transitions. [2024-12-02 11:31:37,995 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 827 transitions. Word has length 91 [2024-12-02 11:31:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:37,996 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 827 transitions. [2024-12-02 11:31:37,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 827 transitions. [2024-12-02 11:31:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 11:31:37,997 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:37,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:37,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:31:37,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:37,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1877696631, now seen corresponding path program 1 times [2024-12-02 11:31:37,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:37,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639295343] [2024-12-02 11:31:37,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639295343] [2024-12-02 11:31:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639295343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463094478] [2024-12-02 11:31:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:38,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:38,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:38,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:38,084 INFO L87 Difference]: Start difference. First operand 506 states and 827 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:38,123 INFO L93 Difference]: Finished difference Result 996 states and 1640 transitions. [2024-12-02 11:31:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:31:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2024-12-02 11:31:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:38,127 INFO L225 Difference]: With dead ends: 996 [2024-12-02 11:31:38,127 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 11:31:38,129 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 11:31:38,129 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 12 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:38,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2436 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 11:31:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-12-02 11:31:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 386 states have (on average 1.6398963730569949) internal successors, (633), 402 states have internal predecessors, (633), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-12-02 11:31:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 826 transitions. [2024-12-02 11:31:38,143 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 826 transitions. Word has length 92 [2024-12-02 11:31:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:38,144 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 826 transitions. [2024-12-02 11:31:38,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 11:31:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 826 transitions. [2024-12-02 11:31:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 11:31:38,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:38,145 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:38,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:31:38,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:38,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash -607531782, now seen corresponding path program 1 times [2024-12-02 11:31:38,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:38,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151849086] [2024-12-02 11:31:38,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:31:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151849086] [2024-12-02 11:31:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151849086] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944291280] [2024-12-02 11:31:38,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:38,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:38,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:38,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:31:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:38,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:31:38,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:31:38,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944291280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:38,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:38,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 11:31:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669769966] [2024-12-02 11:31:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:38,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:31:38,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:38,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:31:38,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:38,740 INFO L87 Difference]: Start difference. First operand 506 states and 826 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:38,817 INFO L93 Difference]: Finished difference Result 1430 states and 2368 transitions. [2024-12-02 11:31:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:31:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-12-02 11:31:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:38,825 INFO L225 Difference]: With dead ends: 1430 [2024-12-02 11:31:38,825 INFO L226 Difference]: Without dead ends: 942 [2024-12-02 11:31:38,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 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 11:31:38,829 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 769 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:38,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1558 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-12-02 11:31:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 927. [2024-12-02 11:31:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 714 states have (on average 1.6554621848739495) internal successors, (1182), 745 states have internal predecessors, (1182), 172 states have call successors, (172), 41 states have call predecessors, (172), 40 states have return successors, (174), 166 states have call predecessors, (174), 169 states have call successors, (174) [2024-12-02 11:31:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1528 transitions. [2024-12-02 11:31:38,877 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1528 transitions. Word has length 93 [2024-12-02 11:31:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:38,877 INFO L471 AbstractCegarLoop]: Abstraction has 927 states and 1528 transitions. [2024-12-02 11:31:38,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1528 transitions. [2024-12-02 11:31:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 11:31:38,881 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:38,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:38,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:31:39,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:39,082 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:39,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1302693276, now seen corresponding path program 1 times [2024-12-02 11:31:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:39,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224408422] [2024-12-02 11:31:39,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:39,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:31:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224408422] [2024-12-02 11:31:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224408422] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154548615] [2024-12-02 11:31:39,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:39,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:31:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:39,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:31:39,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:31:39,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:39,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154548615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 11:31:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130275552] [2024-12-02 11:31:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:31:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:39,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:31:39,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:39,677 INFO L87 Difference]: Start difference. First operand 927 states and 1528 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:39,747 INFO L93 Difference]: Finished difference Result 2272 states and 3774 transitions. [2024-12-02 11:31:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:31:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-12-02 11:31:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:39,755 INFO L225 Difference]: With dead ends: 2272 [2024-12-02 11:31:39,755 INFO L226 Difference]: Without dead ends: 1363 [2024-12-02 11:31:39,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 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 11:31:39,760 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 768 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:39,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1617 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-12-02 11:31:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1315. [2024-12-02 11:31:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1015 states have (on average 1.6699507389162562) internal successors, (1695), 1061 states have internal predecessors, (1695), 243 states have call successors, (243), 56 states have call predecessors, (243), 56 states have return successors, (250), 236 states have call predecessors, (250), 240 states have call successors, (250) [2024-12-02 11:31:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 2188 transitions. [2024-12-02 11:31:39,807 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 2188 transitions. Word has length 94 [2024-12-02 11:31:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:39,808 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 2188 transitions. [2024-12-02 11:31:39,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 11:31:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 2188 transitions. [2024-12-02 11:31:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 11:31:39,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:39,811 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:31:39,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:31:40,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:40,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:40,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1358246980, now seen corresponding path program 1 times [2024-12-02 11:31:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794116743] [2024-12-02 11:31:40,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794116743] [2024-12-02 11:31:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794116743] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:31:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269694037] [2024-12-02 11:31:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:40,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:31:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:40,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:31:40,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:31:40,203 INFO L87 Difference]: Start difference. First operand 1315 states and 2188 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 11:31:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:40,771 INFO L93 Difference]: Finished difference Result 3881 states and 6565 transitions. [2024-12-02 11:31:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:31:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2024-12-02 11:31:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:40,785 INFO L225 Difference]: With dead ends: 3881 [2024-12-02 11:31:40,785 INFO L226 Difference]: Without dead ends: 2584 [2024-12-02 11:31:40,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:31:40,793 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 816 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:40,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 4257 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:31:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2024-12-02 11:31:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2537. [2024-12-02 11:31:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1963 states have (on average 1.6744778400407538) internal successors, (3287), 2051 states have internal predecessors, (3287), 465 states have call successors, (465), 106 states have call predecessors, (465), 108 states have return successors, (541), 457 states have call predecessors, (541), 461 states have call successors, (541) [2024-12-02 11:31:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4293 transitions. [2024-12-02 11:31:40,922 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4293 transitions. Word has length 96 [2024-12-02 11:31:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:40,922 INFO L471 AbstractCegarLoop]: Abstraction has 2537 states and 4293 transitions. [2024-12-02 11:31:40,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 11:31:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4293 transitions. [2024-12-02 11:31:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 11:31:40,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:40,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:40,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:31:40,926 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:40,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1339839982, now seen corresponding path program 1 times [2024-12-02 11:31:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064743547] [2024-12-02 11:31:40,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:31:41,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:41,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064743547] [2024-12-02 11:31:41,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064743547] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:41,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543532444] [2024-12-02 11:31:41,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:41,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:41,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:41,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:31:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:41,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:31:41,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:31:41,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:41,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543532444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:41,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:41,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 11:31:41,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065011125] [2024-12-02 11:31:41,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:41,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:31:41,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:41,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:31:41,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:41,536 INFO L87 Difference]: Start difference. First operand 2537 states and 4293 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 11:31:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:41,836 INFO L93 Difference]: Finished difference Result 7321 states and 12584 transitions. [2024-12-02 11:31:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:31:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-12-02 11:31:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:41,863 INFO L225 Difference]: With dead ends: 7321 [2024-12-02 11:31:41,863 INFO L226 Difference]: Without dead ends: 4803 [2024-12-02 11:31:41,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 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 11:31:41,875 INFO L435 NwaCegarLoop]: 798 mSDtfsCounter, 678 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:41,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1530 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2024-12-02 11:31:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4766. [2024-12-02 11:31:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 3676 states have (on average 1.6409140369967357) internal successors, (6032), 3850 states have internal predecessors, (6032), 878 states have call successors, (878), 206 states have call predecessors, (878), 211 states have return successors, (1127), 865 states have call predecessors, (1127), 872 states have call successors, (1127) [2024-12-02 11:31:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 8037 transitions. [2024-12-02 11:31:42,058 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 8037 transitions. Word has length 97 [2024-12-02 11:31:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:42,058 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 8037 transitions. [2024-12-02 11:31:42,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 11:31:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 8037 transitions. [2024-12-02 11:31:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 11:31:42,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:42,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:42,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:31:42,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 11:31:42,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:42,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1553368555, now seen corresponding path program 1 times [2024-12-02 11:31:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:42,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145460133] [2024-12-02 11:31:42,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:42,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:31:42,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145460133] [2024-12-02 11:31:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145460133] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791404751] [2024-12-02 11:31:42,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:42,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:42,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:42,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:42,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:31:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:42,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:31:42,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:31:42,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791404751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:42,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 11:31:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118177430] [2024-12-02 11:31:42,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:42,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:31:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:42,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:31:42,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:42,848 INFO L87 Difference]: Start difference. First operand 4766 states and 8037 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 11:31:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:43,350 INFO L93 Difference]: Finished difference Result 14184 states and 24244 transitions. [2024-12-02 11:31:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:31:43,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-12-02 11:31:43,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:43,424 INFO L225 Difference]: With dead ends: 14184 [2024-12-02 11:31:43,424 INFO L226 Difference]: Without dead ends: 9439 [2024-12-02 11:31:43,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:31:43,452 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 810 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:43,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1685 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:31:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9439 states. [2024-12-02 11:31:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9439 to 9336. [2024-12-02 11:31:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9336 states, 7228 states have (on average 1.6451300498063088) internal successors, (11891), 7556 states have internal predecessors, (11891), 1696 states have call successors, (1696), 394 states have call predecessors, (1696), 411 states have return successors, (2248), 1691 states have call predecessors, (2248), 1686 states have call successors, (2248) [2024-12-02 11:31:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9336 states to 9336 states and 15835 transitions. [2024-12-02 11:31:43,993 INFO L78 Accepts]: Start accepts. Automaton has 9336 states and 15835 transitions. Word has length 102 [2024-12-02 11:31:43,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:43,994 INFO L471 AbstractCegarLoop]: Abstraction has 9336 states and 15835 transitions. [2024-12-02 11:31:43,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 11:31:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 9336 states and 15835 transitions. [2024-12-02 11:31:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 11:31:43,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:43,998 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:44,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:31:44,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 11:31:44,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash 542251305, now seen corresponding path program 1 times [2024-12-02 11:31:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275360857] [2024-12-02 11:31:44,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:31:44,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:44,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275360857] [2024-12-02 11:31:44,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275360857] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:31:44,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407474332] [2024-12-02 11:31:44,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:44,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:44,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:31:44,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:31:44,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:31:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:44,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:31:44,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:31:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:31:44,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:31:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407474332] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:31:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-12-02 11:31:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029569249] [2024-12-02 11:31:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:44,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:31:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:44,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:31:44,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:31:44,822 INFO L87 Difference]: Start difference. First operand 9336 states and 15835 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 11:31:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:45,454 INFO L93 Difference]: Finished difference Result 17641 states and 30008 transitions. [2024-12-02 11:31:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:31:45,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2024-12-02 11:31:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:45,514 INFO L225 Difference]: With dead ends: 17641 [2024-12-02 11:31:45,514 INFO L226 Difference]: Without dead ends: 8323 [2024-12-02 11:31:45,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:31:45,563 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 689 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:45,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 3185 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:31:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8323 states. [2024-12-02 11:31:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8323 to 8301. [2024-12-02 11:31:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8301 states, 6449 states have (on average 1.6317258489688324) internal successors, (10523), 6724 states have internal predecessors, (10523), 1478 states have call successors, (1478), 358 states have call predecessors, (1478), 373 states have return successors, (1938), 1474 states have call predecessors, (1938), 1468 states have call successors, (1938) [2024-12-02 11:31:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8301 states to 8301 states and 13939 transitions. [2024-12-02 11:31:45,990 INFO L78 Accepts]: Start accepts. Automaton has 8301 states and 13939 transitions. Word has length 102 [2024-12-02 11:31:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:45,990 INFO L471 AbstractCegarLoop]: Abstraction has 8301 states and 13939 transitions. [2024-12-02 11:31:45,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 11:31:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8301 states and 13939 transitions. [2024-12-02 11:31:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 11:31:45,994 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:45,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:46,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 11:31:46,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:31:46,195 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:46,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:46,195 INFO L85 PathProgramCache]: Analyzing trace with hash -887832993, now seen corresponding path program 1 times [2024-12-02 11:31:46,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:46,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631423175] [2024-12-02 11:31:46,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:31:46,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:46,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631423175] [2024-12-02 11:31:46,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631423175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:46,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:46,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:46,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234118306] [2024-12-02 11:31:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:46,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:46,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:46,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:46,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:46,300 INFO L87 Difference]: Start difference. First operand 8301 states and 13939 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 11:31:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:46,626 INFO L93 Difference]: Finished difference Result 16632 states and 28273 transitions. [2024-12-02 11:31:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:31:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-12-02 11:31:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:46,670 INFO L225 Difference]: With dead ends: 16632 [2024-12-02 11:31:46,671 INFO L226 Difference]: Without dead ends: 8349 [2024-12-02 11:31:46,709 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 11:31:46,710 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 12 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:46,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2402 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2024-12-02 11:31:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 8317. [2024-12-02 11:31:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8317 states, 6461 states have (on average 1.6299334468348552) internal successors, (10531), 6736 states have internal predecessors, (10531), 1478 states have call successors, (1478), 366 states have call predecessors, (1478), 377 states have return successors, (1912), 1470 states have call predecessors, (1912), 1468 states have call successors, (1912) [2024-12-02 11:31:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 13921 transitions. [2024-12-02 11:31:47,006 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 13921 transitions. Word has length 102 [2024-12-02 11:31:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:47,006 INFO L471 AbstractCegarLoop]: Abstraction has 8317 states and 13921 transitions. [2024-12-02 11:31:47,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 11:31:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 13921 transitions. [2024-12-02 11:31:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 11:31:47,010 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:47,010 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:47,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:31:47,010 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:47,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash -333813041, now seen corresponding path program 1 times [2024-12-02 11:31:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376253827] [2024-12-02 11:31:47,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 11:31:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376253827] [2024-12-02 11:31:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376253827] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:31:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330259807] [2024-12-02 11:31:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:47,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:31:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:47,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:31:47,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:31:47,137 INFO L87 Difference]: Start difference. First operand 8317 states and 13921 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:31:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:48,152 INFO L93 Difference]: Finished difference Result 24897 states and 42861 transitions. [2024-12-02 11:31:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:31:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2024-12-02 11:31:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:48,260 INFO L225 Difference]: With dead ends: 24897 [2024-12-02 11:31:48,261 INFO L226 Difference]: Without dead ends: 16598 [2024-12-02 11:31:48,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:31:48,311 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 810 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:48,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 4253 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:31:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16598 states. [2024-12-02 11:31:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16598 to 16497. [2024-12-02 11:31:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16497 states, 12828 states have (on average 1.6262862488306828) internal successors, (20862), 13369 states have internal predecessors, (20862), 2911 states have call successors, (2911), 726 states have call predecessors, (2911), 757 states have return successors, (4425), 2913 states have call predecessors, (4425), 2893 states have call successors, (4425) [2024-12-02 11:31:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16497 states to 16497 states and 28198 transitions. [2024-12-02 11:31:49,258 INFO L78 Accepts]: Start accepts. Automaton has 16497 states and 28198 transitions. Word has length 110 [2024-12-02 11:31:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:49,258 INFO L471 AbstractCegarLoop]: Abstraction has 16497 states and 28198 transitions. [2024-12-02 11:31:49,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:31:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16497 states and 28198 transitions. [2024-12-02 11:31:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:31:49,264 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:49,264 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:49,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 11:31:49,265 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:49,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 42821641, now seen corresponding path program 1 times [2024-12-02 11:31:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:49,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486927336] [2024-12-02 11:31:49,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 11:31:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486927336] [2024-12-02 11:31:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486927336] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:49,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385943620] [2024-12-02 11:31:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:49,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:49,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:49,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:49,416 INFO L87 Difference]: Start difference. First operand 16497 states and 28198 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:31:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:50,250 INFO L93 Difference]: Finished difference Result 33120 states and 57611 transitions. [2024-12-02 11:31:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:31:50,251 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-12-02 11:31:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:50,324 INFO L225 Difference]: With dead ends: 33120 [2024-12-02 11:31:50,324 INFO L226 Difference]: Without dead ends: 16641 [2024-12-02 11:31:50,406 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 11:31:50,406 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 12 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:50,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2396 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16641 states. [2024-12-02 11:31:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16641 to 16577. [2024-12-02 11:31:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16577 states, 12900 states have (on average 1.6234108527131783) internal successors, (20942), 13425 states have internal predecessors, (20942), 2911 states have call successors, (2911), 758 states have call predecessors, (2911), 765 states have return successors, (4385), 2905 states have call predecessors, (4385), 2893 states have call successors, (4385) [2024-12-02 11:31:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16577 states to 16577 states and 28238 transitions. [2024-12-02 11:31:51,092 INFO L78 Accepts]: Start accepts. Automaton has 16577 states and 28238 transitions. Word has length 111 [2024-12-02 11:31:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:51,093 INFO L471 AbstractCegarLoop]: Abstraction has 16577 states and 28238 transitions. [2024-12-02 11:31:51,093 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:31:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 16577 states and 28238 transitions. [2024-12-02 11:31:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:31:51,097 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:51,097 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:51,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 11:31:51,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:51,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -294187743, now seen corresponding path program 1 times [2024-12-02 11:31:51,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:51,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276881376] [2024-12-02 11:31:51,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:51,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:31:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276881376] [2024-12-02 11:31:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276881376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:51,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:31:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266213813] [2024-12-02 11:31:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:51,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:31:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:51,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:31:51,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:31:51,275 INFO L87 Difference]: Start difference. First operand 16577 states and 28238 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 11:31:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:52,954 INFO L93 Difference]: Finished difference Result 49817 states and 88358 transitions. [2024-12-02 11:31:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:31:52,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2024-12-02 11:31:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:53,158 INFO L225 Difference]: With dead ends: 49817 [2024-12-02 11:31:53,159 INFO L226 Difference]: Without dead ends: 33258 [2024-12-02 11:31:53,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:31:53,292 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 807 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:53,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 4238 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:31:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2024-12-02 11:31:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 33093. [2024-12-02 11:31:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33093 states, 25763 states have (on average 1.6196483328804876) internal successors, (41727), 26804 states have internal predecessors, (41727), 5788 states have call successors, (5788), 1510 states have call predecessors, (5788), 1541 states have return successors, (10627), 5802 states have call predecessors, (10627), 5754 states have call successors, (10627) [2024-12-02 11:31:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33093 states to 33093 states and 58142 transitions. [2024-12-02 11:31:54,960 INFO L78 Accepts]: Start accepts. Automaton has 33093 states and 58142 transitions. Word has length 120 [2024-12-02 11:31:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:54,960 INFO L471 AbstractCegarLoop]: Abstraction has 33093 states and 58142 transitions. [2024-12-02 11:31:54,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 11:31:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 33093 states and 58142 transitions. [2024-12-02 11:31:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 11:31:54,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:54,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:54,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 11:31:54,963 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:54,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1087748271, now seen corresponding path program 1 times [2024-12-02 11:31:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494696911] [2024-12-02 11:31:54,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:31:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494696911] [2024-12-02 11:31:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494696911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:55,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:55,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:31:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891532078] [2024-12-02 11:31:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:55,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:31:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:55,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:31:55,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:31:55,066 INFO L87 Difference]: Start difference. First operand 33093 states and 58142 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:31:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:31:56,638 INFO L93 Difference]: Finished difference Result 66456 states and 119940 transitions. [2024-12-02 11:31:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:31:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-12-02 11:31:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:31:56,796 INFO L225 Difference]: With dead ends: 66456 [2024-12-02 11:31:56,796 INFO L226 Difference]: Without dead ends: 33381 [2024-12-02 11:31:57,013 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 11:31:57,013 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 11 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:31:57,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2399 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:31:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33381 states. [2024-12-02 11:31:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33381 to 33253. [2024-12-02 11:31:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33253 states, 25907 states have (on average 1.616821708418574) internal successors, (41887), 26948 states have internal predecessors, (41887), 5788 states have call successors, (5788), 1542 states have call predecessors, (5788), 1557 states have return successors, (10571), 5786 states have call predecessors, (10571), 5754 states have call successors, (10571) [2024-12-02 11:31:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33253 states to 33253 states and 58246 transitions. [2024-12-02 11:31:58,306 INFO L78 Accepts]: Start accepts. Automaton has 33253 states and 58246 transitions. Word has length 121 [2024-12-02 11:31:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:31:58,306 INFO L471 AbstractCegarLoop]: Abstraction has 33253 states and 58246 transitions. [2024-12-02 11:31:58,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:31:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 33253 states and 58246 transitions. [2024-12-02 11:31:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:31:58,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:31:58,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:58,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 11:31:58,310 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:31:58,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:31:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash -831830833, now seen corresponding path program 1 times [2024-12-02 11:31:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:31:58,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874646208] [2024-12-02 11:31:58,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:31:58,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:31:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:31:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:31:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:31:58,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874646208] [2024-12-02 11:31:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874646208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:31:58,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:31:58,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:31:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001384373] [2024-12-02 11:31:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:31:58,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:31:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:31:58,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:31:58,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:31:58,442 INFO L87 Difference]: Start difference. First operand 33253 states and 58246 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:32:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:01,900 INFO L93 Difference]: Finished difference Result 100081 states and 186178 transitions. [2024-12-02 11:32:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:32:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2024-12-02 11:32:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:02,400 INFO L225 Difference]: With dead ends: 100081 [2024-12-02 11:32:02,400 INFO L226 Difference]: Without dead ends: 66846 [2024-12-02 11:32:02,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:32:02,769 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 801 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:02,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 4257 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:32:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66846 states. [2024-12-02 11:32:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66846 to 66553. [2024-12-02 11:32:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66553 states, 51858 states have (on average 1.6139457750009643) internal successors, (83696), 53931 states have internal predecessors, (83696), 11553 states have call successors, (11553), 3078 states have call predecessors, (11553), 3141 states have return successors, (26785), 11591 states have call predecessors, (26785), 11487 states have call successors, (26785) [2024-12-02 11:32:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66553 states to 66553 states and 122034 transitions. [2024-12-02 11:32:05,847 INFO L78 Accepts]: Start accepts. Automaton has 66553 states and 122034 transitions. Word has length 131 [2024-12-02 11:32:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:05,847 INFO L471 AbstractCegarLoop]: Abstraction has 66553 states and 122034 transitions. [2024-12-02 11:32:05,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 11:32:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 66553 states and 122034 transitions. [2024-12-02 11:32:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 11:32:05,851 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:05,852 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:05,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 11:32:05,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:05,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1417224057, now seen corresponding path program 1 times [2024-12-02 11:32:05,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:05,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631268422] [2024-12-02 11:32:05,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:05,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:32:05,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631268422] [2024-12-02 11:32:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631268422] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:05,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:32:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:32:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899119403] [2024-12-02 11:32:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:05,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:32:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:05,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:32:05,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:32:05,967 INFO L87 Difference]: Start difference. First operand 66553 states and 122034 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 11:32:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:10,317 INFO L93 Difference]: Finished difference Result 133728 states and 255505 transitions. [2024-12-02 11:32:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:32:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-12-02 11:32:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:10,862 INFO L225 Difference]: With dead ends: 133728 [2024-12-02 11:32:10,862 INFO L226 Difference]: Without dead ends: 67193 [2024-12-02 11:32:11,781 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 11:32:11,782 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 9 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:11,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2396 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:32:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67193 states. [2024-12-02 11:32:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 66937. [2024-12-02 11:32:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66937 states, 52210 states have (on average 1.6104194598735875) internal successors, (84080), 54283 states have internal predecessors, (84080), 11553 states have call successors, (11553), 3142 states have call predecessors, (11553), 3173 states have return successors, (26721), 11559 states have call predecessors, (26721), 11487 states have call successors, (26721) [2024-12-02 11:32:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66937 states to 66937 states and 122354 transitions. [2024-12-02 11:32:15,045 INFO L78 Accepts]: Start accepts. Automaton has 66937 states and 122354 transitions. Word has length 132 [2024-12-02 11:32:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:15,045 INFO L471 AbstractCegarLoop]: Abstraction has 66937 states and 122354 transitions. [2024-12-02 11:32:15,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 11:32:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 66937 states and 122354 transitions. [2024-12-02 11:32:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 11:32:15,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:15,052 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:15,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 11:32:15,052 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:15,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1245842191, now seen corresponding path program 1 times [2024-12-02 11:32:15,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:15,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641150205] [2024-12-02 11:32:15,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 11:32:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641150205] [2024-12-02 11:32:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641150205] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:15,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:32:15,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:32:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200875393] [2024-12-02 11:32:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:15,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:32:15,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:15,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:32:15,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:32:15,216 INFO L87 Difference]: Start difference. First operand 66937 states and 122354 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 11:32:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:19,570 INFO L93 Difference]: Finished difference Result 136433 states and 251459 transitions. [2024-12-02 11:32:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:32:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 143 [2024-12-02 11:32:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:20,138 INFO L225 Difference]: With dead ends: 136433 [2024-12-02 11:32:20,138 INFO L226 Difference]: Without dead ends: 69466 [2024-12-02 11:32:20,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 11:32:20,529 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 674 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:20,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 3352 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:32:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69466 states. [2024-12-02 11:32:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69466 to 69303. [2024-12-02 11:32:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69303 states, 54103 states have (on average 1.599966730125871) internal successors, (86563), 56243 states have internal predecessors, (86563), 11874 states have call successors, (11874), 3310 states have call predecessors, (11874), 3325 states have return successors, (27154), 11785 states have call predecessors, (27154), 11808 states have call successors, (27154) [2024-12-02 11:32:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69303 states to 69303 states and 125591 transitions. [2024-12-02 11:32:23,434 INFO L78 Accepts]: Start accepts. Automaton has 69303 states and 125591 transitions. Word has length 143 [2024-12-02 11:32:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:23,434 INFO L471 AbstractCegarLoop]: Abstraction has 69303 states and 125591 transitions. [2024-12-02 11:32:23,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 11:32:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 69303 states and 125591 transitions. [2024-12-02 11:32:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 11:32:23,443 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:23,443 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:32:23,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 11:32:23,444 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:23,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash 564690533, now seen corresponding path program 1 times [2024-12-02 11:32:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844212139] [2024-12-02 11:32:23,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:32:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844212139] [2024-12-02 11:32:23,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844212139] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:32:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26041101] [2024-12-02 11:32:23,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:23,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:32:23,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:32:23,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:32:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:32:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:23,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:32:23,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 11:32:24,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:32:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26041101] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:32:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 11:32:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288604003] [2024-12-02 11:32:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:24,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:32:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:24,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:32:24,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 11:32:24,083 INFO L87 Difference]: Start difference. First operand 69303 states and 125591 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-12-02 11:32:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:33,038 INFO L93 Difference]: Finished difference Result 180575 states and 357239 transitions. [2024-12-02 11:32:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 11:32:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 148 [2024-12-02 11:32:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:33,836 INFO L225 Difference]: With dead ends: 180575 [2024-12-02 11:32:33,837 INFO L226 Difference]: Without dead ends: 107402 [2024-12-02 11:32:34,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:32:34,412 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 2202 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 5182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:34,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 2227 Invalid, 5182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 11:32:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107402 states. [2024-12-02 11:32:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107402 to 94918. [2024-12-02 11:32:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94918 states, 74168 states have (on average 1.5949331247977565) internal successors, (118293), 77030 states have internal predecessors, (118293), 16128 states have call successors, (16128), 4334 states have call predecessors, (16128), 4621 states have return successors, (43449), 16053 states have call predecessors, (43449), 16046 states have call successors, (43449) [2024-12-02 11:32:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94918 states to 94918 states and 177870 transitions. [2024-12-02 11:32:40,071 INFO L78 Accepts]: Start accepts. Automaton has 94918 states and 177870 transitions. Word has length 148 [2024-12-02 11:32:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:40,071 INFO L471 AbstractCegarLoop]: Abstraction has 94918 states and 177870 transitions. [2024-12-02 11:32:40,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-12-02 11:32:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 94918 states and 177870 transitions. [2024-12-02 11:32:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 11:32:40,079 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:40,079 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:40,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:32:40,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 11:32:40,280 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:40,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1971651975, now seen corresponding path program 1 times [2024-12-02 11:32:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502676550] [2024-12-02 11:32:40,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 11:32:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502676550] [2024-12-02 11:32:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502676550] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:32:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661945268] [2024-12-02 11:32:40,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:32:40,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:32:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:32:40,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:32:40,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:32:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:40,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:32:40,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 11:32:40,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:32:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661945268] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:32:40,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:32:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 11:32:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363430421] [2024-12-02 11:32:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:32:40,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:32:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:40,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:32:40,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:32:40,960 INFO L87 Difference]: Start difference. First operand 94918 states and 177870 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 11:32:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:53,423 INFO L93 Difference]: Finished difference Result 229470 states and 511318 transitions. [2024-12-02 11:32:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:32:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 182 [2024-12-02 11:32:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:54,816 INFO L225 Difference]: With dead ends: 229470 [2024-12-02 11:32:54,817 INFO L226 Difference]: Without dead ends: 134474 [2024-12-02 11:32:56,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 11:32:56,189 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 2117 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:56,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 2131 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 11:32:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134474 states. [2024-12-02 11:33:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134474 to 109936. [2024-12-02 11:33:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109936 states, 86464 states have (on average 1.5782869170984455) internal successors, (136465), 89679 states have internal predecessors, (136465), 17936 states have call successors, (17936), 4942 states have call predecessors, (17936), 5535 states have return successors, (56958), 17798 states have call predecessors, (56958), 17854 states have call successors, (56958) [2024-12-02 11:33:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109936 states to 109936 states and 211359 transitions. [2024-12-02 11:33:03,245 INFO L78 Accepts]: Start accepts. Automaton has 109936 states and 211359 transitions. Word has length 182 [2024-12-02 11:33:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:33:03,245 INFO L471 AbstractCegarLoop]: Abstraction has 109936 states and 211359 transitions. [2024-12-02 11:33:03,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 11:33:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 109936 states and 211359 transitions. [2024-12-02 11:33:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 11:33:03,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:33:03,479 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:03,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:33:03,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 11:33:03,680 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:33:03,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:33:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1203842272, now seen corresponding path program 1 times [2024-12-02 11:33:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:33:03,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710516977] [2024-12-02 11:33:03,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:03,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:33:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 11:33:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:33:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710516977] [2024-12-02 11:33:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710516977] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:33:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736089782] [2024-12-02 11:33:04,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:33:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:33:04,287 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:33:04,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:33:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:04,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:33:04,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:33:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 11:33:04,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:33:04,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736089782] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:33:04,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:33:04,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 11:33:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785383517] [2024-12-02 11:33:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:33:04,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:33:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:33:04,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:33:04,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:33:04,884 INFO L87 Difference]: Start difference. First operand 109936 states and 211359 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 11:33:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:33:19,180 INFO L93 Difference]: Finished difference Result 257988 states and 598823 transitions. [2024-12-02 11:33:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:33:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 188 [2024-12-02 11:33:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:33:20,682 INFO L225 Difference]: With dead ends: 257988 [2024-12-02 11:33:20,682 INFO L226 Difference]: Without dead ends: 147494 [2024-12-02 11:33:22,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 11:33:22,217 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 2113 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:33:22,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 2125 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 11:33:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147494 states. [2024-12-02 11:33:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147494 to 117704. [2024-12-02 11:33:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117704 states, 93252 states have (on average 1.5753549521726076) internal successors, (146905), 96611 states have internal predecessors, (146905), 18224 states have call successors, (18224), 5550 states have call predecessors, (18224), 6227 states have return successors, (58464), 18026 states have call predecessors, (58464), 18142 states have call successors, (58464) [2024-12-02 11:33:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117704 states to 117704 states and 223593 transitions. [2024-12-02 11:33:31,028 INFO L78 Accepts]: Start accepts. Automaton has 117704 states and 223593 transitions. Word has length 188 [2024-12-02 11:33:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:33:31,029 INFO L471 AbstractCegarLoop]: Abstraction has 117704 states and 223593 transitions. [2024-12-02 11:33:31,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 11:33:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 117704 states and 223593 transitions. [2024-12-02 11:33:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 11:33:31,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:33:31,039 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:31,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:33:31,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 11:33:31,239 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:33:31,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:33:31,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1213389291, now seen corresponding path program 1 times [2024-12-02 11:33:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:33:31,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924570746] [2024-12-02 11:33:31,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:33:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 11:33:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:33:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924570746] [2024-12-02 11:33:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924570746] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:33:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305797437] [2024-12-02 11:33:31,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:31,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:33:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:33:31,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:33:31,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:33:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:31,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:33:31,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:33:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 11:33:32,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:33:32,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305797437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:33:32,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:33:32,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 11:33:32,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806100567] [2024-12-02 11:33:32,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:33:32,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:33:32,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:33:32,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:33:32,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:33:32,175 INFO L87 Difference]: Start difference. First operand 117704 states and 223593 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 11:33:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:33:46,034 INFO L93 Difference]: Finished difference Result 273524 states and 621617 transitions. [2024-12-02 11:33:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:33:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 184 [2024-12-02 11:33:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:33:47,355 INFO L225 Difference]: With dead ends: 273524 [2024-12-02 11:33:47,355 INFO L226 Difference]: Without dead ends: 154974 [2024-12-02 11:33:49,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 11:33:49,252 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 2110 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 4126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:33:49,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 2117 Invalid, 4126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 11:33:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154974 states. [2024-12-02 11:33:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154974 to 125984. [2024-12-02 11:33:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125984 states, 100336 states have (on average 1.5706725402647106) internal successors, (157595), 103885 states have internal predecessors, (157595), 18528 states have call successors, (18528), 6302 states have call predecessors, (18528), 7119 states have return successors, (61338), 18280 states have call predecessors, (61338), 18446 states have call successors, (61338) [2024-12-02 11:33:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125984 states to 125984 states and 237461 transitions. [2024-12-02 11:33:57,548 INFO L78 Accepts]: Start accepts. Automaton has 125984 states and 237461 transitions. Word has length 184 [2024-12-02 11:33:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:33:57,548 INFO L471 AbstractCegarLoop]: Abstraction has 125984 states and 237461 transitions. [2024-12-02 11:33:57,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 11:33:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 125984 states and 237461 transitions. [2024-12-02 11:33:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 11:33:57,556 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:33:57,556 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:57,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:33:57,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 11:33:57,757 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:33:57,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:33:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1561204612, now seen corresponding path program 1 times [2024-12-02 11:33:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:33:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400109042] [2024-12-02 11:33:57,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:33:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 11:33:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:33:58,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400109042] [2024-12-02 11:33:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400109042] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:33:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327644914] [2024-12-02 11:33:58,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:33:58,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:33:58,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:33:58,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:33:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:33:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:33:58,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:33:58,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:33:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 11:33:58,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:33:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327644914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:33:58,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:33:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 11:33:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248455443] [2024-12-02 11:33:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:33:58,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:33:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:33:58,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:33:58,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:33:58,547 INFO L87 Difference]: Start difference. First operand 125984 states and 237461 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 11:34:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:12,457 INFO L93 Difference]: Finished difference Result 288704 states and 644980 transitions. [2024-12-02 11:34:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 11:34:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 190 [2024-12-02 11:34:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:14,078 INFO L225 Difference]: With dead ends: 288704 [2024-12-02 11:34:14,078 INFO L226 Difference]: Without dead ends: 161586 [2024-12-02 11:34:15,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 11:34:15,700 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 2055 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 4051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:15,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2148 Valid, 2191 Invalid, 4051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 11:34:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161586 states. [2024-12-02 11:34:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161586 to 133852. [2024-12-02 11:34:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133852 states, 106664 states have (on average 1.5590358508962725) internal successors, (166293), 110535 states have internal predecessors, (166293), 19080 states have call successors, (19080), 7072 states have call predecessors, (19080), 8107 states have return successors, (66066), 18728 states have call predecessors, (66066), 18998 states have call successors, (66066) [2024-12-02 11:34:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133852 states to 133852 states and 251439 transitions. [2024-12-02 11:34:24,487 INFO L78 Accepts]: Start accepts. Automaton has 133852 states and 251439 transitions. Word has length 190 [2024-12-02 11:34:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:24,487 INFO L471 AbstractCegarLoop]: Abstraction has 133852 states and 251439 transitions. [2024-12-02 11:34:24,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 11:34:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 133852 states and 251439 transitions. [2024-12-02 11:34:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 11:34:24,496 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:24,496 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:24,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:34:24,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 11:34:24,696 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:24,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1835103881, now seen corresponding path program 1 times [2024-12-02 11:34:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374760901] [2024-12-02 11:34:24,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:24,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 11:34:24,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374760901] [2024-12-02 11:34:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374760901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778406605] [2024-12-02 11:34:24,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:24,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:24,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:34:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:25,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:34:25,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 11:34:25,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:25,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778406605] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:25,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:34:25,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-12-02 11:34:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124790305] [2024-12-02 11:34:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:25,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:25,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:25,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:25,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:34:25,248 INFO L87 Difference]: Start difference. First operand 133852 states and 251439 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 11:34:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:33,094 INFO L93 Difference]: Finished difference Result 259118 states and 504265 transitions. [2024-12-02 11:34:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:34:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 191 [2024-12-02 11:34:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:34,505 INFO L225 Difference]: With dead ends: 259118 [2024-12-02 11:34:34,505 INFO L226 Difference]: Without dead ends: 134842 [2024-12-02 11:34:35,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:34:35,848 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 0 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:35,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:34:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134842 states. [2024-12-02 11:34:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134842 to 134266. [2024-12-02 11:34:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134266 states, 107078 states have (on average 1.5568744279870748) internal successors, (166707), 110949 states have internal predecessors, (166707), 19080 states have call successors, (19080), 7072 states have call predecessors, (19080), 8107 states have return successors, (66066), 18728 states have call predecessors, (66066), 18998 states have call successors, (66066) [2024-12-02 11:34:43,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134266 states to 134266 states and 251853 transitions. [2024-12-02 11:34:43,511 INFO L78 Accepts]: Start accepts. Automaton has 134266 states and 251853 transitions. Word has length 191 [2024-12-02 11:34:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:43,512 INFO L471 AbstractCegarLoop]: Abstraction has 134266 states and 251853 transitions. [2024-12-02 11:34:43,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 11:34:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 134266 states and 251853 transitions. [2024-12-02 11:34:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 11:34:43,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:43,524 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:43,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:34:43,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 11:34:43,725 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:43,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 490803727, now seen corresponding path program 1 times [2024-12-02 11:34:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667802004] [2024-12-02 11:34:43,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 11:34:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667802004] [2024-12-02 11:34:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667802004] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925333712] [2024-12-02 11:34:44,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:44,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:44,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:44,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:44,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566f5951-ab0d-4a3d-918e-c35a63ac55f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:34:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:44,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:34:44,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 11:34:44,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925333712] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:34:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-12-02 11:34:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732933888] [2024-12-02 11:34:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:44,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:34:44,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:44,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:34:44,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-12-02 11:34:44,522 INFO L87 Difference]: Start difference. First operand 134266 states and 251853 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2024-12-02 11:35:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:04,964 INFO L93 Difference]: Finished difference Result 431153 states and 840361 transitions. [2024-12-02 11:35:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:35:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 200 [2024-12-02 11:35:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:07,638 INFO L225 Difference]: With dead ends: 431153 [2024-12-02 11:35:07,638 INFO L226 Difference]: Without dead ends: 296905 [2024-12-02 11:35:09,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:35:09,157 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 3154 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 5325 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 3496 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:09,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 3496 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5325 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 11:35:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296905 states. [2024-12-02 11:35:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296905 to 283792. [2024-12-02 11:35:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283792 states, 221898 states have (on average 1.5470621636968336) internal successors, (343290), 231783 states have internal predecessors, (343290), 43806 states have call successors, (43806), 14141 states have call predecessors, (43806), 18087 states have return successors, (150471), 43790 states have call predecessors, (150471), 43644 states have call successors, (150471)