./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC --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 bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:04:16,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:04:17,071 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:04:17,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:04:17,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:04:17,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:04:17,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:04:17,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:04:17,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:04:17,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:04:17,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:04:17,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:04:17,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:04:17,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:04:17,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:04:17,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:04:17,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:04:17,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:04:17,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:04:17,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:04:17,106 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:04:17,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:04:17,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:04:17,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:17,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:04:17,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:17,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:04:17,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:04:17,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:04:17,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:04:17,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:04:17,109 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_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC 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 -> bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 [2024-11-23 23:04:17,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:04:17,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:04:17,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:04:17,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:04:17,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:04:17,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2024-11-23 23:04:20,263 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/data/84485e95c/6e480df08f15464c98ac1d6f5c1f53f8/FLAG23b3e5c86 [2024-11-23 23:04:20,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:04:20,700 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2024-11-23 23:04:20,732 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/data/84485e95c/6e480df08f15464c98ac1d6f5c1f53f8/FLAG23b3e5c86 [2024-11-23 23:04:20,754 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/data/84485e95c/6e480df08f15464c98ac1d6f5c1f53f8 [2024-11-23 23:04:20,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:04:20,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:04:20,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:04:20,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:04:20,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:04:20,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:20" (1/1) ... [2024-11-23 23:04:20,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af62146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:20, skipping insertion in model container [2024-11-23 23:04:20,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:20" (1/1) ... [2024-11-23 23:04:20,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:04:21,314 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_17c71870-cbcc-4561-a682-dfe0d4d31108/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2024-11-23 23:04:21,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:04:21,404 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:04:21,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-23 23:04:21,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [412] [2024-11-23 23:04:21,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [532] [2024-11-23 23:04:21,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [567] [2024-11-23 23:04:21,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [755] [2024-11-23 23:04:21,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1426] [2024-11-23 23:04:21,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1518] [2024-11-23 23:04:21,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3108] [2024-11-23 23:04:21,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3117] [2024-11-23 23:04:21,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3130] [2024-11-23 23:04:21,579 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_17c71870-cbcc-4561-a682-dfe0d4d31108/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2024-11-23 23:04:21,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:04:21,652 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:04:21,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21 WrapperNode [2024-11-23 23:04:21,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:04:21,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:04:21,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:04:21,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:04:21,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,762 INFO L138 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1165 [2024-11-23 23:04:21,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:04:21,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:04:21,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:04:21,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:04:21,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,807 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 23:04:21,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,838 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:04:21,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:04:21,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:04:21,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:04:21,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (1/1) ... [2024-11-23 23:04:21,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:21,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:04:21,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:04:21,977 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-23 23:04:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-23 23:04:21,978 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 23:04:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 23:04:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 23:04:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 23:04:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 23:04:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 23:04:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 23:04:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 23:04:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 23:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 23:04:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 23:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 23:04:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 23:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 23:04:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 23:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 23:04:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-23 23:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-23 23:04:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 23:04:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 23:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 23:04:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-23 23:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-23 23:04:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 23:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 23:04:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 23:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 23:04:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 23:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 23:04:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 23:04:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 23:04:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:04:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 23:04:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 23:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-23 23:04:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-23 23:04:22,209 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:04:22,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:04:23,880 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2024-11-23 23:04:23,880 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:04:23,912 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:04:23,912 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:04:23,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:23 BoogieIcfgContainer [2024-11-23 23:04:23,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:04:23,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:04:23,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:04:23,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:04:23,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:04:20" (1/3) ... [2024-11-23 23:04:23,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432e9c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:23, skipping insertion in model container [2024-11-23 23:04:23,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:21" (2/3) ... [2024-11-23 23:04:23,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432e9c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:23, skipping insertion in model container [2024-11-23 23:04:23,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:23" (3/3) ... [2024-11-23 23:04:23,922 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2024-11-23 23:04:23,938 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:04:23,940 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product28.cil.c that has 27 procedures, 584 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:04:24,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:04:24,026 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;@6f4ef1c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:04:24,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:04:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 584 states, 454 states have (on average 1.6850220264317182) internal successors, (765), 477 states have internal predecessors, (765), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-23 23:04:24,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:04:24,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:24,045 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:24,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:24,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash -482119573, now seen corresponding path program 1 times [2024-11-23 23:04:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894754319] [2024-11-23 23:04:24,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894754319] [2024-11-23 23:04:24,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894754319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305410634] [2024-11-23 23:04:24,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:24,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:24,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:04:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:25,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:04:25,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:04:25,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305410634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:25,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:25,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-23 23:04:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722115430] [2024-11-23 23:04:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:25,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:04:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:04:25,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:25,457 INFO L87 Difference]: Start difference. First operand has 584 states, 454 states have (on average 1.6850220264317182) internal successors, (765), 477 states have internal predecessors, (765), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-23 23:04:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:25,566 INFO L93 Difference]: Finished difference Result 605 states and 999 transitions. [2024-11-23 23:04:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:04:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2024-11-23 23:04:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:25,600 INFO L225 Difference]: With dead ends: 605 [2024-11-23 23:04:25,600 INFO L226 Difference]: Without dead ends: 576 [2024-11-23 23:04:25,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:25,609 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:25,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-23 23:04:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2024-11-23 23:04:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6830357142857142) internal successors, (754), 469 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 953 transitions. [2024-11-23 23:04:25,740 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 953 transitions. Word has length 83 [2024-11-23 23:04:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:25,743 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 953 transitions. [2024-11-23 23:04:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-23 23:04:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 953 transitions. [2024-11-23 23:04:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-23 23:04:25,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:25,751 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:25,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:04:25,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:04:25,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:25,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1194528794, now seen corresponding path program 1 times [2024-11-23 23:04:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:25,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091667303] [2024-11-23 23:04:25,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091667303] [2024-11-23 23:04:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091667303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:26,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013470075] [2024-11-23 23:04:26,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:26,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:26,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:26,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:26,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:04:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:26,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:26,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:26,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013470075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:26,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:26,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144268246] [2024-11-23 23:04:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:26,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:26,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:26,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:26,936 INFO L87 Difference]: Start difference. First operand 576 states and 953 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:27,107 INFO L93 Difference]: Finished difference Result 1143 states and 1898 transitions. [2024-11-23 23:04:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-23 23:04:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:27,123 INFO L225 Difference]: With dead ends: 1143 [2024-11-23 23:04:27,124 INFO L226 Difference]: Without dead ends: 576 [2024-11-23 23:04:27,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:27,134 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 5 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:27,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2817 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-23 23:04:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2024-11-23 23:04:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6808035714285714) internal successors, (753), 469 states have internal predecessors, (753), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 952 transitions. [2024-11-23 23:04:27,210 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 952 transitions. Word has length 84 [2024-11-23 23:04:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:27,211 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 952 transitions. [2024-11-23 23:04:27,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 952 transitions. [2024-11-23 23:04:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-23 23:04:27,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:27,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:27,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:27,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:27,415 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:27,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash 31255320, now seen corresponding path program 1 times [2024-11-23 23:04:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165340570] [2024-11-23 23:04:27,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165340570] [2024-11-23 23:04:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165340570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817661321] [2024-11-23 23:04:27,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:27,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:27,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:27,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:27,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:04:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:28,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:28,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:28,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:28,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817661321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:28,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16483667] [2024-11-23 23:04:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:28,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:28,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:28,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:28,182 INFO L87 Difference]: Start difference. First operand 576 states and 952 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:28,270 INFO L93 Difference]: Finished difference Result 1143 states and 1896 transitions. [2024-11-23 23:04:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-23 23:04:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:28,281 INFO L225 Difference]: With dead ends: 1143 [2024-11-23 23:04:28,281 INFO L226 Difference]: Without dead ends: 576 [2024-11-23 23:04:28,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:28,285 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 4 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:28,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2817 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-23 23:04:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2024-11-23 23:04:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6785714285714286) internal successors, (752), 469 states have internal predecessors, (752), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 951 transitions. [2024-11-23 23:04:28,315 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 951 transitions. Word has length 86 [2024-11-23 23:04:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:28,316 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 951 transitions. [2024-11-23 23:04:28,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 951 transitions. [2024-11-23 23:04:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 23:04:28,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:28,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:28,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:04:28,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:28,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:28,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash -640627866, now seen corresponding path program 1 times [2024-11-23 23:04:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559491517] [2024-11-23 23:04:28,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559491517] [2024-11-23 23:04:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559491517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257128889] [2024-11-23 23:04:28,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:28,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:28,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:28,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:04:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:29,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:29,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:29,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257128889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:29,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029678534] [2024-11-23 23:04:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:29,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:29,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:29,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:29,206 INFO L87 Difference]: Start difference. First operand 576 states and 951 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:29,332 INFO L93 Difference]: Finished difference Result 1150 states and 1903 transitions. [2024-11-23 23:04:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-23 23:04:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:29,340 INFO L225 Difference]: With dead ends: 1150 [2024-11-23 23:04:29,340 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 23:04:29,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:29,346 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 13 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:29,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2814 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 23:04:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 23:04:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 477 states have internal predecessors, (764), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 963 transitions. [2024-11-23 23:04:29,398 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 963 transitions. Word has length 88 [2024-11-23 23:04:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:29,400 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 963 transitions. [2024-11-23 23:04:29,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 963 transitions. [2024-11-23 23:04:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-23 23:04:29,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:29,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:29,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:04:29,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:29,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:29,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -890901475, now seen corresponding path program 1 times [2024-11-23 23:04:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491511281] [2024-11-23 23:04:29,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491511281] [2024-11-23 23:04:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491511281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003311421] [2024-11-23 23:04:29,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:29,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:29,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:04:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:30,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:30,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:30,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003311421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:30,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216391816] [2024-11-23 23:04:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:30,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:30,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:30,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:30,272 INFO L87 Difference]: Start difference. First operand 585 states and 963 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:30,375 INFO L93 Difference]: Finished difference Result 1152 states and 1904 transitions. [2024-11-23 23:04:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:30,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-11-23 23:04:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:30,381 INFO L225 Difference]: With dead ends: 1152 [2024-11-23 23:04:30,381 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 23:04:30,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:30,386 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 11 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:30,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2814 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 23:04:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 23:04:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6732456140350878) internal successors, (763), 477 states have internal predecessors, (763), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 962 transitions. [2024-11-23 23:04:30,430 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 962 transitions. Word has length 89 [2024-11-23 23:04:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:30,430 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 962 transitions. [2024-11-23 23:04:30,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 962 transitions. [2024-11-23 23:04:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:04:30,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:30,432 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:30,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:30,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:30,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:30,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:30,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1714996930, now seen corresponding path program 1 times [2024-11-23 23:04:30,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:30,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534205849] [2024-11-23 23:04:30,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:30,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534205849] [2024-11-23 23:04:30,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534205849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:30,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684779925] [2024-11-23 23:04:30,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:30,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:30,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:30,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:30,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:04:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:31,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:31,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:31,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684779925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:31,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213749392] [2024-11-23 23:04:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:31,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:31,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:31,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:31,227 INFO L87 Difference]: Start difference. First operand 585 states and 962 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:31,312 INFO L93 Difference]: Finished difference Result 1152 states and 1903 transitions. [2024-11-23 23:04:31,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:31,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-23 23:04:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:31,318 INFO L225 Difference]: With dead ends: 1152 [2024-11-23 23:04:31,319 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 23:04:31,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:31,322 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 10 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:31,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2814 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 23:04:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 23:04:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 477 states have internal predecessors, (762), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 961 transitions. [2024-11-23 23:04:31,350 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 961 transitions. Word has length 90 [2024-11-23 23:04:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:31,350 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 961 transitions. [2024-11-23 23:04:31,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 961 transitions. [2024-11-23 23:04:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:04:31,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:31,352 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:31,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:04:31,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:04:31,557 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:31,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1627052743, now seen corresponding path program 1 times [2024-11-23 23:04:31,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:31,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098055726] [2024-11-23 23:04:31,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098055726] [2024-11-23 23:04:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098055726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986793472] [2024-11-23 23:04:31,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:31,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:31,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:04:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:32,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:32,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:32,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986793472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:32,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 23:04:32,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640868052] [2024-11-23 23:04:32,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:32,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:32,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:32,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:32,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:32,306 INFO L87 Difference]: Start difference. First operand 585 states and 961 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:32,479 INFO L93 Difference]: Finished difference Result 1178 states and 1950 transitions. [2024-11-23 23:04:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-23 23:04:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:32,486 INFO L225 Difference]: With dead ends: 1178 [2024-11-23 23:04:32,486 INFO L226 Difference]: Without dead ends: 600 [2024-11-23 23:04:32,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:32,490 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 76 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:32,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2705 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-23 23:04:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 585. [2024-11-23 23:04:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6600877192982457) internal successors, (757), 477 states have internal predecessors, (757), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 956 transitions. [2024-11-23 23:04:32,524 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 956 transitions. Word has length 91 [2024-11-23 23:04:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:32,524 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 956 transitions. [2024-11-23 23:04:32,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 956 transitions. [2024-11-23 23:04:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-23 23:04:32,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:32,527 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:32,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:04:32,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 23:04:32,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:32,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1149392287, now seen corresponding path program 1 times [2024-11-23 23:04:32,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:32,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827501991] [2024-11-23 23:04:32,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:32,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:32,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827501991] [2024-11-23 23:04:32,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827501991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:32,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746625457] [2024-11-23 23:04:32,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:32,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:32,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:32,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:04:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:33,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:33,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:33,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:33,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746625457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:33,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:33,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 23:04:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233467647] [2024-11-23 23:04:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:33,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:33,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:33,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:33,375 INFO L87 Difference]: Start difference. First operand 585 states and 956 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:33,562 INFO L93 Difference]: Finished difference Result 1178 states and 1940 transitions. [2024-11-23 23:04:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2024-11-23 23:04:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:33,570 INFO L225 Difference]: With dead ends: 1178 [2024-11-23 23:04:33,570 INFO L226 Difference]: Without dead ends: 600 [2024-11-23 23:04:33,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:33,573 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 75 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:33,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2705 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-23 23:04:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 585. [2024-11-23 23:04:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6491228070175439) internal successors, (752), 477 states have internal predecessors, (752), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 951 transitions. [2024-11-23 23:04:33,604 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 951 transitions. Word has length 93 [2024-11-23 23:04:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:33,605 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 951 transitions. [2024-11-23 23:04:33,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 951 transitions. [2024-11-23 23:04:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-23 23:04:33,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:33,607 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:33,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:04:33,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:33,811 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:33,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -122646439, now seen corresponding path program 1 times [2024-11-23 23:04:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321515677] [2024-11-23 23:04:33,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321515677] [2024-11-23 23:04:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321515677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763974700] [2024-11-23 23:04:34,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:34,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:34,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:34,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:04:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:34,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:34,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:34,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763974700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 23:04:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792404221] [2024-11-23 23:04:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:34,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:34,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:34,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:34,472 INFO L87 Difference]: Start difference. First operand 585 states and 951 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:34,703 INFO L93 Difference]: Finished difference Result 1229 states and 2013 transitions. [2024-11-23 23:04:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:34,704 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2024-11-23 23:04:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:34,710 INFO L225 Difference]: With dead ends: 1229 [2024-11-23 23:04:34,710 INFO L226 Difference]: Without dead ends: 666 [2024-11-23 23:04:34,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:34,713 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 130 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:34,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2736 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:04:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-23 23:04:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 636. [2024-11-23 23:04:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 527 states have internal predecessors, (837), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1036 transitions. [2024-11-23 23:04:34,744 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1036 transitions. Word has length 95 [2024-11-23 23:04:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:34,745 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1036 transitions. [2024-11-23 23:04:34,745 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1036 transitions. [2024-11-23 23:04:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-23 23:04:34,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:34,747 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:34,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:04:34,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:34,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:34,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:34,949 INFO L85 PathProgramCache]: Analyzing trace with hash 985256304, now seen corresponding path program 1 times [2024-11-23 23:04:34,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:34,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719153426] [2024-11-23 23:04:34,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719153426] [2024-11-23 23:04:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719153426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:35,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592442498] [2024-11-23 23:04:35,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:35,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:35,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:35,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:04:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:35,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:35,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:35,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592442498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:35,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 23:04:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583423207] [2024-11-23 23:04:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:35,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:35,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:35,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:35,601 INFO L87 Difference]: Start difference. First operand 636 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:35,854 INFO L93 Difference]: Finished difference Result 1244 states and 2037 transitions. [2024-11-23 23:04:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-11-23 23:04:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:35,861 INFO L225 Difference]: With dead ends: 1244 [2024-11-23 23:04:35,862 INFO L226 Difference]: Without dead ends: 666 [2024-11-23 23:04:35,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:35,868 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 124 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:35,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2709 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:04:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-23 23:04:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 636. [2024-11-23 23:04:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 527 states have internal predecessors, (832), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 23:04:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1031 transitions. [2024-11-23 23:04:35,944 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1031 transitions. Word has length 96 [2024-11-23 23:04:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:35,945 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1031 transitions. [2024-11-23 23:04:35,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1031 transitions. [2024-11-23 23:04:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-23 23:04:35,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:35,948 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:35,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:36,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:04:36,148 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:36,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1556151087, now seen corresponding path program 1 times [2024-11-23 23:04:36,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:36,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560733139] [2024-11-23 23:04:36,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:36,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:36,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560733139] [2024-11-23 23:04:36,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560733139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:36,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573738153] [2024-11-23 23:04:36,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:36,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:36,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:36,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:36,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:04:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:36,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:04:36,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:36,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573738153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:36,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 23:04:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659648831] [2024-11-23 23:04:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:36,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:04:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:36,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:04:36,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:04:36,804 INFO L87 Difference]: Start difference. First operand 636 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:37,028 INFO L93 Difference]: Finished difference Result 1237 states and 2017 transitions. [2024-11-23 23:04:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:04:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-23 23:04:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:37,038 INFO L225 Difference]: With dead ends: 1237 [2024-11-23 23:04:37,039 INFO L226 Difference]: Without dead ends: 674 [2024-11-23 23:04:37,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:04:37,043 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 113 mSDsluCounter, 5437 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:37,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6358 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-23 23:04:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 655. [2024-11-23 23:04:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 522 states have (on average 1.6436781609195403) internal successors, (858), 545 states have internal predecessors, (858), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-23 23:04:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1061 transitions. [2024-11-23 23:04:37,079 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1061 transitions. Word has length 96 [2024-11-23 23:04:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:37,080 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1061 transitions. [2024-11-23 23:04:37,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1061 transitions. [2024-11-23 23:04:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-23 23:04:37,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:37,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:37,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:04:37,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:37,285 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:37,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1436031214, now seen corresponding path program 1 times [2024-11-23 23:04:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:37,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454939897] [2024-11-23 23:04:37,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454939897] [2024-11-23 23:04:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454939897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974606999] [2024-11-23 23:04:37,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:37,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:37,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:04:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:37,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:04:37,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:37,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974606999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:37,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 23:04:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527035887] [2024-11-23 23:04:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:37,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:04:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:37,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:04:37,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:37,891 INFO L87 Difference]: Start difference. First operand 655 states and 1061 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:38,060 INFO L93 Difference]: Finished difference Result 1175 states and 1917 transitions. [2024-11-23 23:04:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:04:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-23 23:04:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:38,068 INFO L225 Difference]: With dead ends: 1175 [2024-11-23 23:04:38,069 INFO L226 Difference]: Without dead ends: 679 [2024-11-23 23:04:38,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:38,074 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 86 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5525 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:38,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5525 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-23 23:04:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 674. [2024-11-23 23:04:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6431226765799256) internal successors, (884), 563 states have internal predecessors, (884), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1091 transitions. [2024-11-23 23:04:38,119 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1091 transitions. Word has length 96 [2024-11-23 23:04:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:38,120 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1091 transitions. [2024-11-23 23:04:38,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1091 transitions. [2024-11-23 23:04:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:04:38,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:38,124 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:38,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:38,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:04:38,324 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:38,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2105598860, now seen corresponding path program 1 times [2024-11-23 23:04:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401746211] [2024-11-23 23:04:38,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:04:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401746211] [2024-11-23 23:04:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401746211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419096596] [2024-11-23 23:04:38,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:38,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:38,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:04:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:38,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:04:38,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:38,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419096596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:38,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:38,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 23:04:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740945872] [2024-11-23 23:04:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:38,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:04:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:38,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:04:38,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:38,973 INFO L87 Difference]: Start difference. First operand 674 states and 1091 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:39,105 INFO L93 Difference]: Finished difference Result 1205 states and 1968 transitions. [2024-11-23 23:04:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:04:39,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-23 23:04:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:39,112 INFO L225 Difference]: With dead ends: 1205 [2024-11-23 23:04:39,113 INFO L226 Difference]: Without dead ends: 709 [2024-11-23 23:04:39,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:39,116 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 95 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:39,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5515 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-23 23:04:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 674. [2024-11-23 23:04:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6431226765799256) internal successors, (884), 563 states have internal predecessors, (884), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1091 transitions. [2024-11-23 23:04:39,149 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1091 transitions. Word has length 97 [2024-11-23 23:04:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:39,149 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1091 transitions. [2024-11-23 23:04:39,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1091 transitions. [2024-11-23 23:04:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:04:39,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:39,152 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:39,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:04:39,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:04:39,356 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:39,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash -587313164, now seen corresponding path program 1 times [2024-11-23 23:04:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:39,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066129271] [2024-11-23 23:04:39,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:04:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066129271] [2024-11-23 23:04:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066129271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663270038] [2024-11-23 23:04:39,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:39,462 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:39,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:04:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:39,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:04:39,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:39,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663270038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:39,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 23:04:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85120621] [2024-11-23 23:04:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:39,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:04:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:39,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:04:39,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:39,939 INFO L87 Difference]: Start difference. First operand 674 states and 1091 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:40,127 INFO L93 Difference]: Finished difference Result 1190 states and 1942 transitions. [2024-11-23 23:04:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:04:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-23 23:04:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:40,135 INFO L225 Difference]: With dead ends: 1190 [2024-11-23 23:04:40,135 INFO L226 Difference]: Without dead ends: 694 [2024-11-23 23:04:40,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:40,139 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 113 mSDsluCounter, 5443 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6366 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:40,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6366 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-23 23:04:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 674. [2024-11-23 23:04:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6431226765799256) internal successors, (884), 563 states have internal predecessors, (884), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1091 transitions. [2024-11-23 23:04:40,172 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1091 transitions. Word has length 97 [2024-11-23 23:04:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:40,172 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1091 transitions. [2024-11-23 23:04:40,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1091 transitions. [2024-11-23 23:04:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:04:40,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:40,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:40,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:40,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:04:40,379 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:40,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1606042785, now seen corresponding path program 1 times [2024-11-23 23:04:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601992088] [2024-11-23 23:04:40,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:40,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:40,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601992088] [2024-11-23 23:04:40,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601992088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:40,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457555073] [2024-11-23 23:04:40,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:40,518 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:40,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:04:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:40,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:40,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:04:40,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:40,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457555073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:40,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:40,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813537320] [2024-11-23 23:04:40,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:40,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:40,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:40,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:40,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:40,932 INFO L87 Difference]: Start difference. First operand 674 states and 1091 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:41,002 INFO L93 Difference]: Finished difference Result 1242 states and 2027 transitions. [2024-11-23 23:04:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2024-11-23 23:04:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:41,009 INFO L225 Difference]: With dead ends: 1242 [2024-11-23 23:04:41,009 INFO L226 Difference]: Without dead ends: 674 [2024-11-23 23:04:41,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:41,014 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 13 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:41,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2783 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-23 23:04:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2024-11-23 23:04:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6356877323420074) internal successors, (880), 563 states have internal predecessors, (880), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1087 transitions. [2024-11-23 23:04:41,048 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1087 transitions. Word has length 97 [2024-11-23 23:04:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:41,048 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1087 transitions. [2024-11-23 23:04:41,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1087 transitions. [2024-11-23 23:04:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:04:41,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:41,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:41,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:41,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:04:41,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:41,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1761845562, now seen corresponding path program 1 times [2024-11-23 23:04:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980603574] [2024-11-23 23:04:41,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:04:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980603574] [2024-11-23 23:04:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980603574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063508226] [2024-11-23 23:04:41,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:41,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:41,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:41,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:41,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:04:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:41,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:04:41,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 23:04:41,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063508226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:41,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:41,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:04:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200475611] [2024-11-23 23:04:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:41,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:41,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:41,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:41,787 INFO L87 Difference]: Start difference. First operand 674 states and 1087 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:41,871 INFO L93 Difference]: Finished difference Result 1286 states and 2095 transitions. [2024-11-23 23:04:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:41,871 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-11-23 23:04:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:41,877 INFO L225 Difference]: With dead ends: 1286 [2024-11-23 23:04:41,878 INFO L226 Difference]: Without dead ends: 698 [2024-11-23 23:04:41,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:41,882 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 7 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:41,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2756 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-23 23:04:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-23 23:04:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 562 states have (on average 1.6156583629893237) internal successors, (908), 587 states have internal predecessors, (908), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1115 transitions. [2024-11-23 23:04:41,915 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1115 transitions. Word has length 98 [2024-11-23 23:04:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:41,917 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1115 transitions. [2024-11-23 23:04:41,917 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1115 transitions. [2024-11-23 23:04:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:04:41,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:41,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:41,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 23:04:42,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:04:42,120 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:42,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 373932990, now seen corresponding path program 1 times [2024-11-23 23:04:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143024012] [2024-11-23 23:04:42,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:04:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143024012] [2024-11-23 23:04:42,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143024012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052412244] [2024-11-23 23:04:42,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:42,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:42,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:42,225 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 23:04:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:42,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:04:42,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:04:42,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052412244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:42,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 23:04:42,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367659430] [2024-11-23 23:04:42,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:42,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:04:42,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:42,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:04:42,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:42,703 INFO L87 Difference]: Start difference. First operand 698 states and 1115 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:42,890 INFO L93 Difference]: Finished difference Result 1220 states and 1974 transitions. [2024-11-23 23:04:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:04:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-11-23 23:04:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:42,897 INFO L225 Difference]: With dead ends: 1220 [2024-11-23 23:04:42,897 INFO L226 Difference]: Without dead ends: 724 [2024-11-23 23:04:42,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:42,901 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 119 mSDsluCounter, 5405 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6322 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:42,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6322 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-23 23:04:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 698. [2024-11-23 23:04:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 562 states have (on average 1.6156583629893237) internal successors, (908), 587 states have internal predecessors, (908), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 23:04:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1115 transitions. [2024-11-23 23:04:42,961 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1115 transitions. Word has length 99 [2024-11-23 23:04:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:42,961 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1115 transitions. [2024-11-23 23:04:42,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1115 transitions. [2024-11-23 23:04:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:04:42,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:42,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:42,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 23:04:43,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:04:43,165 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:43,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1583548102, now seen corresponding path program 1 times [2024-11-23 23:04:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682817483] [2024-11-23 23:04:43,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:04:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682817483] [2024-11-23 23:04:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682817483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526047804] [2024-11-23 23:04:43,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:43,263 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:43,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 23:04:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:43,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:04:43,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 23:04:44,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526047804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:44,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:44,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-11-23 23:04:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769529115] [2024-11-23 23:04:44,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:44,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:04:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:44,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:04:44,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:44,126 INFO L87 Difference]: Start difference. First operand 698 states and 1115 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:48,331 INFO L93 Difference]: Finished difference Result 2258 states and 3727 transitions. [2024-11-23 23:04:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:04:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-11-23 23:04:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:48,348 INFO L225 Difference]: With dead ends: 2258 [2024-11-23 23:04:48,348 INFO L226 Difference]: Without dead ends: 1767 [2024-11-23 23:04:48,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:48,352 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 2857 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 4361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:48,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 1738 Invalid, 4361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [541 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:04:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2024-11-23 23:04:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1580. [2024-11-23 23:04:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1255 states have (on average 1.6549800796812748) internal successors, (2077), 1298 states have internal predecessors, (2077), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2024-11-23 23:04:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2604 transitions. [2024-11-23 23:04:48,446 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2604 transitions. Word has length 99 [2024-11-23 23:04:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:48,447 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2604 transitions. [2024-11-23 23:04:48,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:04:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2604 transitions. [2024-11-23 23:04:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 23:04:48,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:48,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:04:48,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 23:04:48,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:04:48,657 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:48,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1638800875, now seen corresponding path program 1 times [2024-11-23 23:04:48,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:48,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881544358] [2024-11-23 23:04:48,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:48,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:04:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881544358] [2024-11-23 23:04:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881544358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787082866] [2024-11-23 23:04:48,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:48,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:48,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 23:04:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:49,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 23:04:49,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 23:04:49,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787082866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:49,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:49,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 23:04:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276085581] [2024-11-23 23:04:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:49,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:04:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:49,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:04:49,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:49,411 INFO L87 Difference]: Start difference. First operand 1580 states and 2604 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 23:04:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:53,004 INFO L93 Difference]: Finished difference Result 4216 states and 7001 transitions. [2024-11-23 23:04:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:04:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 151 [2024-11-23 23:04:53,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:53,028 INFO L225 Difference]: With dead ends: 4216 [2024-11-23 23:04:53,028 INFO L226 Difference]: Without dead ends: 2683 [2024-11-23 23:04:53,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:04:53,037 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 1738 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:53,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 1743 Invalid, 5384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:04:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2024-11-23 23:04:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2464. [2024-11-23 23:04:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1930 states have (on average 1.6347150259067358) internal successors, (3155), 1982 states have internal predecessors, (3155), 425 states have call successors, (425), 89 states have call predecessors, (425), 108 states have return successors, (468), 403 states have call predecessors, (468), 420 states have call successors, (468) [2024-11-23 23:04:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4048 transitions. [2024-11-23 23:04:53,247 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4048 transitions. Word has length 151 [2024-11-23 23:04:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:53,247 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 4048 transitions. [2024-11-23 23:04:53,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 23:04:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4048 transitions. [2024-11-23 23:04:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-23 23:04:53,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:53,253 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:53,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 23:04:53,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,454 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:53,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1064725425, now seen corresponding path program 1 times [2024-11-23 23:04:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:53,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698130242] [2024-11-23 23:04:53,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:53,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:04:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698130242] [2024-11-23 23:04:53,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698130242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022120931] [2024-11-23 23:04:53,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:53,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:53,568 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:53,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 23:04:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:54,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:04:54,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:54,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:54,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022120931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:54,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:54,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 23:04:54,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251010988] [2024-11-23 23:04:54,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:54,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:04:54,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:54,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:04:54,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:54,169 INFO L87 Difference]: Start difference. First operand 2464 states and 4048 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:54,790 INFO L93 Difference]: Finished difference Result 4769 states and 8016 transitions. [2024-11-23 23:04:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2024-11-23 23:04:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:54,810 INFO L225 Difference]: With dead ends: 4769 [2024-11-23 23:04:54,811 INFO L226 Difference]: Without dead ends: 2512 [2024-11-23 23:04:54,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:54,823 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 878 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:54,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2371 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:04:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2024-11-23 23:04:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2512. [2024-11-23 23:04:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 1972 states have (on average 1.6364097363083163) internal successors, (3227), 2024 states have internal predecessors, (3227), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2024-11-23 23:04:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 4125 transitions. [2024-11-23 23:04:55,057 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 4125 transitions. Word has length 152 [2024-11-23 23:04:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:55,058 INFO L471 AbstractCegarLoop]: Abstraction has 2512 states and 4125 transitions. [2024-11-23 23:04:55,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 4125 transitions. [2024-11-23 23:04:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 23:04:55,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:55,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:55,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 23:04:55,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:55,267 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:55,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1382380483, now seen corresponding path program 1 times [2024-11-23 23:04:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294483304] [2024-11-23 23:04:55,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:04:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294483304] [2024-11-23 23:04:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294483304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570874963] [2024-11-23 23:04:55,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:55,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:55,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 23:04:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:55,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:04:55,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:56,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570874963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:56,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 23:04:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048832766] [2024-11-23 23:04:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:56,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:04:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:56,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:04:56,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:56,045 INFO L87 Difference]: Start difference. First operand 2512 states and 4125 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:56,674 INFO L93 Difference]: Finished difference Result 4865 states and 8154 transitions. [2024-11-23 23:04:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2024-11-23 23:04:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:56,693 INFO L225 Difference]: With dead ends: 4865 [2024-11-23 23:04:56,693 INFO L226 Difference]: Without dead ends: 2560 [2024-11-23 23:04:56,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:56,704 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 876 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:56,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 2368 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:04:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2024-11-23 23:04:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2560. [2024-11-23 23:04:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2014 states have (on average 1.638033763654419) internal successors, (3299), 2066 states have internal predecessors, (3299), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2024-11-23 23:04:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4202 transitions. [2024-11-23 23:04:56,863 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4202 transitions. Word has length 154 [2024-11-23 23:04:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:56,864 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4202 transitions. [2024-11-23 23:04:56,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4202 transitions. [2024-11-23 23:04:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:04:56,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:56,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:56,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 23:04:57,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 23:04:57,107 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:57,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash -482485327, now seen corresponding path program 1 times [2024-11-23 23:04:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042495419] [2024-11-23 23:04:57,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:57,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042495419] [2024-11-23 23:04:57,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042495419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898260783] [2024-11-23 23:04:57,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:57,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:57,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:57,229 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:57,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 23:04:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:57,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:04:57,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:57,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:57,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898260783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:57,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 23:04:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257849073] [2024-11-23 23:04:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:57,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:04:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:57,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:04:57,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:57,841 INFO L87 Difference]: Start difference. First operand 2560 states and 4202 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:58,462 INFO L93 Difference]: Finished difference Result 4961 states and 8292 transitions. [2024-11-23 23:04:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:58,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2024-11-23 23:04:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:58,480 INFO L225 Difference]: With dead ends: 4961 [2024-11-23 23:04:58,480 INFO L226 Difference]: Without dead ends: 2608 [2024-11-23 23:04:58,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:58,494 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 868 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:58,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2365 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:04:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2024-11-23 23:04:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2608. [2024-11-23 23:04:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2056 states have (on average 1.639591439688716) internal successors, (3371), 2108 states have internal predecessors, (3371), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2024-11-23 23:04:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 4279 transitions. [2024-11-23 23:04:58,631 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 4279 transitions. Word has length 156 [2024-11-23 23:04:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:58,632 INFO L471 AbstractCegarLoop]: Abstraction has 2608 states and 4279 transitions. [2024-11-23 23:04:58,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 4279 transitions. [2024-11-23 23:04:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 23:04:58,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:58,638 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:58,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-23 23:04:58,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 23:04:58,839 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:58,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1103402805, now seen corresponding path program 1 times [2024-11-23 23:04:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989776853] [2024-11-23 23:04:58,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 23:04:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989776853] [2024-11-23 23:04:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989776853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916856833] [2024-11-23 23:04:58,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:58,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:59,001 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 23:04:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:59,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:04:59,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:59,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916856833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:04:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 23:04:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415992061] [2024-11-23 23:04:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:59,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:04:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:59,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:04:59,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:59,624 INFO L87 Difference]: Start difference. First operand 2608 states and 4279 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:00,219 INFO L93 Difference]: Finished difference Result 5057 states and 8430 transitions. [2024-11-23 23:05:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:05:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-23 23:05:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:00,238 INFO L225 Difference]: With dead ends: 5057 [2024-11-23 23:05:00,238 INFO L226 Difference]: Without dead ends: 2656 [2024-11-23 23:05:00,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:05:00,250 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 864 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:00,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2362 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:05:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2024-11-23 23:05:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2656. [2024-11-23 23:05:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2098 states have (on average 1.6410867492850334) internal successors, (3443), 2150 states have internal predecessors, (3443), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-11-23 23:05:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4356 transitions. [2024-11-23 23:05:00,384 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4356 transitions. Word has length 158 [2024-11-23 23:05:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:00,385 INFO L471 AbstractCegarLoop]: Abstraction has 2656 states and 4356 transitions. [2024-11-23 23:05:00,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4356 transitions. [2024-11-23 23:05:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-23 23:05:00,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:00,391 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:00,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-23 23:05:00,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:00,595 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:00,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1431421519, now seen corresponding path program 1 times [2024-11-23 23:05:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719053404] [2024-11-23 23:05:00,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:05:00,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719053404] [2024-11-23 23:05:00,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719053404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:00,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011898133] [2024-11-23 23:05:00,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:00,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:00,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:00,719 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:00,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 23:05:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:01,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:05:01,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:05:01,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:01,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011898133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:01,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:01,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 23:05:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621100841] [2024-11-23 23:05:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:01,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:05:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:01,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:05:01,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:01,473 INFO L87 Difference]: Start difference. First operand 2656 states and 4356 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 23:05:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:01,946 INFO L93 Difference]: Finished difference Result 2768 states and 4543 transitions. [2024-11-23 23:05:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 160 [2024-11-23 23:05:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:01,965 INFO L225 Difference]: With dead ends: 2768 [2024-11-23 23:05:01,965 INFO L226 Difference]: Without dead ends: 2753 [2024-11-23 23:05:01,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:01,968 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 852 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:01,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1702 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:05:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2024-11-23 23:05:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2662. [2024-11-23 23:05:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2104 states have (on average 1.6392585551330798) internal successors, (3449), 2156 states have internal predecessors, (3449), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-11-23 23:05:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4362 transitions. [2024-11-23 23:05:02,107 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4362 transitions. Word has length 160 [2024-11-23 23:05:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:02,108 INFO L471 AbstractCegarLoop]: Abstraction has 2662 states and 4362 transitions. [2024-11-23 23:05:02,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 23:05:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4362 transitions. [2024-11-23 23:05:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-23 23:05:02,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:02,114 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:05:02,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:02,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:02,319 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:02,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1237870324, now seen corresponding path program 1 times [2024-11-23 23:05:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010623929] [2024-11-23 23:05:02,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:02,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:05:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010623929] [2024-11-23 23:05:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010623929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578477376] [2024-11-23 23:05:02,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:02,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:02,445 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:02,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-23 23:05:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:02,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:05:02,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:05:03,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578477376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-23 23:05:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150730025] [2024-11-23 23:05:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:03,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:05:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:03,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:05:03,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:05:03,073 INFO L87 Difference]: Start difference. First operand 2662 states and 4362 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:03,673 INFO L93 Difference]: Finished difference Result 2862 states and 4648 transitions. [2024-11-23 23:05:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:05:03,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2024-11-23 23:05:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:03,697 INFO L225 Difference]: With dead ends: 2862 [2024-11-23 23:05:03,697 INFO L226 Difference]: Without dead ends: 2847 [2024-11-23 23:05:03,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:05:03,701 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 867 mSDsluCounter, 2743 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 3679 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:03,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 3679 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:05:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2024-11-23 23:05:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2826. [2024-11-23 23:05:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2236 states have (on average 1.6328264758497317) internal successors, (3651), 2288 states have internal predecessors, (3651), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2024-11-23 23:05:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4599 transitions. [2024-11-23 23:05:03,899 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4599 transitions. Word has length 166 [2024-11-23 23:05:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:03,900 INFO L471 AbstractCegarLoop]: Abstraction has 2826 states and 4599 transitions. [2024-11-23 23:05:03,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4599 transitions. [2024-11-23 23:05:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-23 23:05:03,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:03,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:03,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-23 23:05:04,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:04,112 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:04,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1301431138, now seen corresponding path program 1 times [2024-11-23 23:05:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:04,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632360241] [2024-11-23 23:05:04,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:05:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632360241] [2024-11-23 23:05:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632360241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731091333] [2024-11-23 23:05:04,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:04,309 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:04,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-23 23:05:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:04,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:05:04,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 23:05:04,827 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731091333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:04,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:04,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 23:05:04,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538806616] [2024-11-23 23:05:04,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:04,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:04,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:04,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:04,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:04,830 INFO L87 Difference]: Start difference. First operand 2826 states and 4599 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:05,004 INFO L93 Difference]: Finished difference Result 5626 states and 9168 transitions. [2024-11-23 23:05:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2024-11-23 23:05:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:05,025 INFO L225 Difference]: With dead ends: 5626 [2024-11-23 23:05:05,025 INFO L226 Difference]: Without dead ends: 2795 [2024-11-23 23:05:05,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:05,035 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 7 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:05,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2786 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-11-23 23:05:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2795. [2024-11-23 23:05:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2208 states have (on average 1.6326992753623188) internal successors, (3605), 2258 states have internal predecessors, (3605), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-23 23:05:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4549 transitions. [2024-11-23 23:05:05,220 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4549 transitions. Word has length 177 [2024-11-23 23:05:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:05,220 INFO L471 AbstractCegarLoop]: Abstraction has 2795 states and 4549 transitions. [2024-11-23 23:05:05,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4549 transitions. [2024-11-23 23:05:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:05:05,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:05,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:05,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-23 23:05:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:05:05,428 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:05,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -553136627, now seen corresponding path program 1 times [2024-11-23 23:05:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143571783] [2024-11-23 23:05:05,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:05:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143571783] [2024-11-23 23:05:05,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143571783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340304805] [2024-11-23 23:05:05,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:05,649 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:05,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-23 23:05:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:06,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:05:06,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:05:06,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340304805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-23 23:05:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550098077] [2024-11-23 23:05:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:05:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:06,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:05:06,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:06,171 INFO L87 Difference]: Start difference. First operand 2795 states and 4549 transitions. Second operand has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:06,376 INFO L93 Difference]: Finished difference Result 5559 states and 9062 transitions. [2024-11-23 23:05:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:05:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 179 [2024-11-23 23:05:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:06,400 INFO L225 Difference]: With dead ends: 5559 [2024-11-23 23:05:06,401 INFO L226 Difference]: Without dead ends: 2795 [2024-11-23 23:05:06,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:05:06,411 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 119 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5568 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:06,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5568 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-11-23 23:05:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2774. [2024-11-23 23:05:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2187 states have (on average 1.632830361225423) internal successors, (3571), 2237 states have internal predecessors, (3571), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-23 23:05:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4515 transitions. [2024-11-23 23:05:06,557 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4515 transitions. Word has length 179 [2024-11-23 23:05:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:06,558 INFO L471 AbstractCegarLoop]: Abstraction has 2774 states and 4515 transitions. [2024-11-23 23:05:06,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4515 transitions. [2024-11-23 23:05:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:05:06,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:06,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:06,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:06,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:05:06,768 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:06,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 875032456, now seen corresponding path program 1 times [2024-11-23 23:05:06,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:06,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748935065] [2024-11-23 23:05:06,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:06,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:05:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748935065] [2024-11-23 23:05:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748935065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956093264] [2024-11-23 23:05:06,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:07,000 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:07,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-23 23:05:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:07,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:05:07,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:05:07,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956093264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-23 23:05:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688861163] [2024-11-23 23:05:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:07,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:07,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:07,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:05:07,501 INFO L87 Difference]: Start difference. First operand 2774 states and 4515 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:07,671 INFO L93 Difference]: Finished difference Result 5541 states and 9032 transitions. [2024-11-23 23:05:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2024-11-23 23:05:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:07,692 INFO L225 Difference]: With dead ends: 5541 [2024-11-23 23:05:07,692 INFO L226 Difference]: Without dead ends: 2798 [2024-11-23 23:05:07,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:05:07,702 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 128 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:07,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2665 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-11-23 23:05:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2774. [2024-11-23 23:05:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2187 states have (on average 1.6323731138545954) internal successors, (3570), 2237 states have internal predecessors, (3570), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-23 23:05:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4514 transitions. [2024-11-23 23:05:07,850 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4514 transitions. Word has length 181 [2024-11-23 23:05:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 2774 states and 4514 transitions. [2024-11-23 23:05:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4514 transitions. [2024-11-23 23:05:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 23:05:07,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:07,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:07,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:08,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:05:08,058 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:08,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1274380669, now seen corresponding path program 1 times [2024-11-23 23:05:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:08,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705832292] [2024-11-23 23:05:08,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:05:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705832292] [2024-11-23 23:05:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705832292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:08,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:05:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166239046] [2024-11-23 23:05:08,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:08,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:08,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:08,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:08,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:08,195 INFO L87 Difference]: Start difference. First operand 2774 states and 4514 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:08,395 INFO L93 Difference]: Finished difference Result 5476 states and 8941 transitions. [2024-11-23 23:05:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-23 23:05:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:08,416 INFO L225 Difference]: With dead ends: 5476 [2024-11-23 23:05:08,416 INFO L226 Difference]: Without dead ends: 2734 [2024-11-23 23:05:08,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:08,429 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 8 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:08,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2783 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2024-11-23 23:05:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2734. [2024-11-23 23:05:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2150 states have (on average 1.6311627906976744) internal successors, (3507), 2198 states have internal predecessors, (3507), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-23 23:05:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4447 transitions. [2024-11-23 23:05:08,567 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4447 transitions. Word has length 182 [2024-11-23 23:05:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:08,567 INFO L471 AbstractCegarLoop]: Abstraction has 2734 states and 4447 transitions. [2024-11-23 23:05:08,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:05:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4447 transitions. [2024-11-23 23:05:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-23 23:05:08,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:08,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:08,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:05:08,572 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:08,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1248991276, now seen corresponding path program 1 times [2024-11-23 23:05:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:08,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407187470] [2024-11-23 23:05:08,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 23:05:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407187470] [2024-11-23 23:05:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407187470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:08,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:05:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107799565] [2024-11-23 23:05:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:08,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:05:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:08,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:05:08,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:08,808 INFO L87 Difference]: Start difference. First operand 2734 states and 4447 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:08,988 INFO L93 Difference]: Finished difference Result 5379 states and 8780 transitions. [2024-11-23 23:05:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:05:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2024-11-23 23:05:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:09,009 INFO L225 Difference]: With dead ends: 5379 [2024-11-23 23:05:09,009 INFO L226 Difference]: Without dead ends: 2720 [2024-11-23 23:05:09,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:05:09,020 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 88 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5394 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:09,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5394 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-23 23:05:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2720. [2024-11-23 23:05:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2136 states have (on average 1.6301498127340823) internal successors, (3482), 2184 states have internal predecessors, (3482), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-23 23:05:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4422 transitions. [2024-11-23 23:05:09,150 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4422 transitions. Word has length 183 [2024-11-23 23:05:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 2720 states and 4422 transitions. [2024-11-23 23:05:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4422 transitions. [2024-11-23 23:05:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-23 23:05:09,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:09,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:09,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 23:05:09,155 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:09,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1719418056, now seen corresponding path program 1 times [2024-11-23 23:05:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978955780] [2024-11-23 23:05:09,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:05:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:09,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978955780] [2024-11-23 23:05:09,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978955780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:09,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:05:09,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197391055] [2024-11-23 23:05:09,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:09,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:05:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:09,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:05:09,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:05:09,768 INFO L87 Difference]: Start difference. First operand 2720 states and 4422 transitions. Second operand has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:10,213 INFO L93 Difference]: Finished difference Result 5406 states and 8808 transitions. [2024-11-23 23:05:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:05:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2024-11-23 23:05:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:10,246 INFO L225 Difference]: With dead ends: 5406 [2024-11-23 23:05:10,246 INFO L226 Difference]: Without dead ends: 2711 [2024-11-23 23:05:10,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:05:10,257 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 45 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:10,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7801 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:05:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2024-11-23 23:05:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2711. [2024-11-23 23:05:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2127 states have (on average 1.629995298542548) internal successors, (3467), 2175 states have internal predecessors, (3467), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-23 23:05:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4407 transitions. [2024-11-23 23:05:10,426 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4407 transitions. Word has length 184 [2024-11-23 23:05:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:10,426 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 4407 transitions. [2024-11-23 23:05:10,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4407 transitions. [2024-11-23 23:05:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:05:10,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:10,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:10,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:05:10,432 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:10,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 980566851, now seen corresponding path program 1 times [2024-11-23 23:05:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091792074] [2024-11-23 23:05:10,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:05:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091792074] [2024-11-23 23:05:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091792074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:05:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027383495] [2024-11-23 23:05:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:10,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:05:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:10,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:05:10,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:05:10,896 INFO L87 Difference]: Start difference. First operand 2711 states and 4407 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:11,184 INFO L93 Difference]: Finished difference Result 5338 states and 8714 transitions. [2024-11-23 23:05:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:05:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2024-11-23 23:05:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:11,203 INFO L225 Difference]: With dead ends: 5338 [2024-11-23 23:05:11,203 INFO L226 Difference]: Without dead ends: 2705 [2024-11-23 23:05:11,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:05:11,214 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 31 mSDsluCounter, 6123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7004 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:11,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7004 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2024-11-23 23:05:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2705. [2024-11-23 23:05:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2121 states have (on average 1.6313059877416314) internal successors, (3460), 2169 states have internal predecessors, (3460), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-23 23:05:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4400 transitions. [2024-11-23 23:05:11,447 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4400 transitions. Word has length 185 [2024-11-23 23:05:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:11,447 INFO L471 AbstractCegarLoop]: Abstraction has 2705 states and 4400 transitions. [2024-11-23 23:05:11,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:05:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4400 transitions. [2024-11-23 23:05:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:05:11,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:11,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:11,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 23:05:11,460 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:11,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 804109125, now seen corresponding path program 1 times [2024-11-23 23:05:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:11,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51719519] [2024-11-23 23:05:11,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:05:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51719519] [2024-11-23 23:05:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51719519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333526563] [2024-11-23 23:05:12,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:12,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:12,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:12,157 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:12,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-23 23:05:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:12,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:05:12,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:05:13,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333526563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-23 23:05:13,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120342171] [2024-11-23 23:05:13,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:13,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:05:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:13,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:05:13,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:05:13,137 INFO L87 Difference]: Start difference. First operand 2705 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-23 23:05:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:15,128 INFO L93 Difference]: Finished difference Result 5412 states and 8846 transitions. [2024-11-23 23:05:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:05:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 185 [2024-11-23 23:05:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:15,145 INFO L225 Difference]: With dead ends: 5412 [2024-11-23 23:05:15,146 INFO L226 Difference]: Without dead ends: 2799 [2024-11-23 23:05:15,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:05:15,155 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 1554 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:15,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1346 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:05:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2024-11-23 23:05:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2627. [2024-11-23 23:05:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2019 states have (on average 1.6161466072313027) internal successors, (3263), 2081 states have internal predecessors, (3263), 471 states have call successors, (471), 123 states have call predecessors, (471), 136 states have return successors, (520), 444 states have call predecessors, (520), 466 states have call successors, (520) [2024-11-23 23:05:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4254 transitions. [2024-11-23 23:05:15,321 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4254 transitions. Word has length 185 [2024-11-23 23:05:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:15,322 INFO L471 AbstractCegarLoop]: Abstraction has 2627 states and 4254 transitions. [2024-11-23 23:05:15,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-23 23:05:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4254 transitions. [2024-11-23 23:05:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:05:15,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:15,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:15,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-23 23:05:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 23:05:15,530 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:15,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash -929995325, now seen corresponding path program 1 times [2024-11-23 23:05:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560437631] [2024-11-23 23:05:15,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:05:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:16,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560437631] [2024-11-23 23:05:16,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560437631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:16,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373154874] [2024-11-23 23:05:16,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:16,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:16,454 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:16,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-23 23:05:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:17,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:05:17,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-23 23:05:17,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373154874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:17,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:17,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-23 23:05:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640216575] [2024-11-23 23:05:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:17,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:05:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:17,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:05:17,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:05:17,276 INFO L87 Difference]: Start difference. First operand 2627 states and 4254 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-23 23:05:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:21,080 INFO L93 Difference]: Finished difference Result 8997 states and 14819 transitions. [2024-11-23 23:05:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:05:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 185 [2024-11-23 23:05:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:21,122 INFO L225 Difference]: With dead ends: 8997 [2024-11-23 23:05:21,122 INFO L226 Difference]: Without dead ends: 6462 [2024-11-23 23:05:21,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:05:21,136 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 2403 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 5391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:21,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 2848 Invalid, 5391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:05:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2024-11-23 23:05:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 6020. [2024-11-23 23:05:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 4631 states have (on average 1.6259987043835025) internal successors, (7530), 4774 states have internal predecessors, (7530), 1061 states have call successors, (1061), 268 states have call predecessors, (1061), 327 states have return successors, (1262), 1021 states have call predecessors, (1262), 1056 states have call successors, (1262) [2024-11-23 23:05:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 9853 transitions. [2024-11-23 23:05:21,827 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 9853 transitions. Word has length 185 [2024-11-23 23:05:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:21,827 INFO L471 AbstractCegarLoop]: Abstraction has 6020 states and 9853 transitions. [2024-11-23 23:05:21,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-23 23:05:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 9853 transitions. [2024-11-23 23:05:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-23 23:05:21,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:21,832 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:21,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:22,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-23 23:05:22,038 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:22,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2053517693, now seen corresponding path program 1 times [2024-11-23 23:05:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033233002] [2024-11-23 23:05:22,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 23:05:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033233002] [2024-11-23 23:05:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033233002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719294338] [2024-11-23 23:05:22,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:22,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:22,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:22,713 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:22,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-23 23:05:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:23,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 23:05:23,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:05:23,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719294338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:23,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:23,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-23 23:05:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575075376] [2024-11-23 23:05:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:23,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:05:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:23,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:05:23,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:05:23,831 INFO L87 Difference]: Start difference. First operand 6020 states and 9853 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-23 23:05:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:27,293 INFO L93 Difference]: Finished difference Result 13038 states and 21518 transitions. [2024-11-23 23:05:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:05:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2024-11-23 23:05:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:27,354 INFO L225 Difference]: With dead ends: 13038 [2024-11-23 23:05:27,354 INFO L226 Difference]: Without dead ends: 7110 [2024-11-23 23:05:27,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:05:27,394 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 2148 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 4001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:27,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 2113 Invalid, 4001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:05:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2024-11-23 23:05:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 6295. [2024-11-23 23:05:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 4832 states have (on average 1.6181705298013245) internal successors, (7819), 4993 states have internal predecessors, (7819), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 365 states have return successors, (1395), 1062 states have call predecessors, (1395), 1092 states have call successors, (1395) [2024-11-23 23:05:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 10311 transitions. [2024-11-23 23:05:28,077 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 10311 transitions. Word has length 187 [2024-11-23 23:05:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:28,078 INFO L471 AbstractCegarLoop]: Abstraction has 6295 states and 10311 transitions. [2024-11-23 23:05:28,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-23 23:05:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 10311 transitions. [2024-11-23 23:05:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-23 23:05:28,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:28,085 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:28,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:28,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 23:05:28,286 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:28,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2053963799, now seen corresponding path program 1 times [2024-11-23 23:05:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601039376] [2024-11-23 23:05:28,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 23:05:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601039376] [2024-11-23 23:05:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601039376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476115119] [2024-11-23 23:05:29,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:29,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:29,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:29,048 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:29,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-23 23:05:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:29,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:05:29,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:05:29,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:29,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476115119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:29,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:29,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-23 23:05:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797104841] [2024-11-23 23:05:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:29,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:05:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:29,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:05:29,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:05:29,630 INFO L87 Difference]: Start difference. First operand 6295 states and 10311 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:05:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:30,165 INFO L93 Difference]: Finished difference Result 15684 states and 25963 transitions. [2024-11-23 23:05:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:05:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 192 [2024-11-23 23:05:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:30,210 INFO L225 Difference]: With dead ends: 15684 [2024-11-23 23:05:30,211 INFO L226 Difference]: Without dead ends: 9484 [2024-11-23 23:05:30,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:05:30,232 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 806 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:30,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2460 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2024-11-23 23:05:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 6283. [2024-11-23 23:05:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 4826 states have (on average 1.617695814338997) internal successors, (7807), 4981 states have internal predecessors, (7807), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 359 states have return successors, (1350), 1062 states have call predecessors, (1350), 1092 states have call successors, (1350) [2024-11-23 23:05:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 10254 transitions. [2024-11-23 23:05:30,713 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 10254 transitions. Word has length 192 [2024-11-23 23:05:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:30,714 INFO L471 AbstractCegarLoop]: Abstraction has 6283 states and 10254 transitions. [2024-11-23 23:05:30,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:05:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 10254 transitions. [2024-11-23 23:05:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-23 23:05:30,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:30,718 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:30,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-23 23:05:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-23 23:05:30,919 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1160477461, now seen corresponding path program 1 times [2024-11-23 23:05:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581803019] [2024-11-23 23:05:30,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:30,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 23:05:31,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581803019] [2024-11-23 23:05:31,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581803019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812434686] [2024-11-23 23:05:31,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:31,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:31,443 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:31,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-23 23:05:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:31,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 23:05:31,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:05:32,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812434686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:05:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266938276] [2024-11-23 23:05:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:32,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:32,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:32,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:05:32,095 INFO L87 Difference]: Start difference. First operand 6283 states and 10254 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:05:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:33,566 INFO L93 Difference]: Finished difference Result 12344 states and 20251 transitions. [2024-11-23 23:05:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:05:33,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2024-11-23 23:05:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:33,622 INFO L225 Difference]: With dead ends: 12344 [2024-11-23 23:05:33,622 INFO L226 Difference]: Without dead ends: 6147 [2024-11-23 23:05:33,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:05:33,654 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 1314 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:33,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 187 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:05:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2024-11-23 23:05:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6147. [2024-11-23 23:05:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 4736 states have (on average 1.6102195945945945) internal successors, (7626), 4890 states have internal predecessors, (7626), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2024-11-23 23:05:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 9982 transitions. [2024-11-23 23:05:34,413 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 9982 transitions. Word has length 192 [2024-11-23 23:05:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:34,414 INFO L471 AbstractCegarLoop]: Abstraction has 6147 states and 9982 transitions. [2024-11-23 23:05:34,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:05:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 9982 transitions. [2024-11-23 23:05:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:05:34,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:34,417 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:34,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-23 23:05:34,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-23 23:05:34,618 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:34,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1615349417, now seen corresponding path program 1 times [2024-11-23 23:05:34,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:34,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924763697] [2024-11-23 23:05:34,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:34,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 23:05:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924763697] [2024-11-23 23:05:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924763697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924031930] [2024-11-23 23:05:35,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:35,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:35,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:35,087 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:35,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-23 23:05:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:35,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 23:05:35,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:05:35,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:05:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924031930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:35,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:05:35,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-23 23:05:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542975716] [2024-11-23 23:05:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:35,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:05:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:35,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:05:35,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:05:35,628 INFO L87 Difference]: Start difference. First operand 6147 states and 9982 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 23:05:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:36,054 INFO L93 Difference]: Finished difference Result 6209 states and 10062 transitions. [2024-11-23 23:05:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2024-11-23 23:05:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:36,090 INFO L225 Difference]: With dead ends: 6209 [2024-11-23 23:05:36,091 INFO L226 Difference]: Without dead ends: 6195 [2024-11-23 23:05:36,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:05:36,098 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 0 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:36,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3529 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:05:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6195 states. [2024-11-23 23:05:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6195 to 6195. [2024-11-23 23:05:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6195 states, 4784 states have (on average 1.6040969899665551) internal successors, (7674), 4938 states have internal predecessors, (7674), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2024-11-23 23:05:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 10030 transitions. [2024-11-23 23:05:36,428 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 10030 transitions. Word has length 193 [2024-11-23 23:05:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:36,429 INFO L471 AbstractCegarLoop]: Abstraction has 6195 states and 10030 transitions. [2024-11-23 23:05:36,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 23:05:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 10030 transitions. [2024-11-23 23:05:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-23 23:05:36,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:36,433 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:36,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-23 23:05:36,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 23:05:36,634 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:36,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash 346005369, now seen corresponding path program 1 times [2024-11-23 23:05:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142908025] [2024-11-23 23:05:36,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-23 23:05:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142908025] [2024-11-23 23:05:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142908025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:05:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731823645] [2024-11-23 23:05:37,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:37,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:37,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:37,126 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:37,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-23 23:05:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:37,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:05:37,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-23 23:05:37,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:05:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-23 23:05:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731823645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:05:38,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:05:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2024-11-23 23:05:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67779944] [2024-11-23 23:05:38,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:05:38,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:05:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:38,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:05:38,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:05:38,847 INFO L87 Difference]: Start difference. First operand 6195 states and 10030 transitions. Second operand has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-23 23:06:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:03,821 INFO L93 Difference]: Finished difference Result 56422 states and 95347 transitions. [2024-11-23 23:06:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-23 23:06:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) Word has length 236 [2024-11-23 23:06:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:04,027 INFO L225 Difference]: With dead ends: 56422 [2024-11-23 23:06:04,027 INFO L226 Difference]: Without dead ends: 50313 [2024-11-23 23:06:04,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2634 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1060, Invalid=8060, Unknown=0, NotChecked=0, Total=9120 [2024-11-23 23:06:04,075 INFO L435 NwaCegarLoop]: 1860 mSDtfsCounter, 13937 mSDsluCounter, 18504 mSDsCounter, 0 mSdLazyCounter, 35398 mSolverCounterSat, 5607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13937 SdHoareTripleChecker+Valid, 20364 SdHoareTripleChecker+Invalid, 41005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5607 IncrementalHoareTripleChecker+Valid, 35398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:04,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13937 Valid, 20364 Invalid, 41005 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5607 Valid, 35398 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2024-11-23 23:06:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50313 states. [2024-11-23 23:06:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50313 to 47304. [2024-11-23 23:06:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47304 states, 35749 states have (on average 1.5801560882821897) internal successors, (56489), 37057 states have internal predecessors, (56489), 8766 states have call successors, (8766), 1667 states have call predecessors, (8766), 2788 states have return successors, (13820), 9015 states have call predecessors, (13820), 8762 states have call successors, (13820) [2024-11-23 23:06:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47304 states to 47304 states and 79075 transitions. [2024-11-23 23:06:07,798 INFO L78 Accepts]: Start accepts. Automaton has 47304 states and 79075 transitions. Word has length 236 [2024-11-23 23:06:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:07,799 INFO L471 AbstractCegarLoop]: Abstraction has 47304 states and 79075 transitions. [2024-11-23 23:06:07,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-23 23:06:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 47304 states and 79075 transitions. [2024-11-23 23:06:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-23 23:06:07,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:07,868 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:07,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-23 23:06:08,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-23 23:06:08,068 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:08,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -280283441, now seen corresponding path program 1 times [2024-11-23 23:06:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850432546] [2024-11-23 23:06:08,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-23 23:06:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850432546] [2024-11-23 23:06:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850432546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:08,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:06:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982554502] [2024-11-23 23:06:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:08,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:06:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:08,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:06:08,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:06:08,341 INFO L87 Difference]: Start difference. First operand 47304 states and 79075 transitions. Second operand has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 23:06:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:10,710 INFO L93 Difference]: Finished difference Result 75716 states and 125970 transitions. [2024-11-23 23:06:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:06:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 239 [2024-11-23 23:06:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:10,968 INFO L225 Difference]: With dead ends: 75716 [2024-11-23 23:06:10,968 INFO L226 Difference]: Without dead ends: 28516 [2024-11-23 23:06:11,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:06:11,224 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 41 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:11,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6066 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:06:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28516 states. [2024-11-23 23:06:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28516 to 28516. [2024-11-23 23:06:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28516 states, 21698 states have (on average 1.5886256797861553) internal successors, (34470), 22530 states have internal predecessors, (34470), 5058 states have call successors, (5058), 1116 states have call predecessors, (5058), 1759 states have return successors, (7484), 5105 states have call predecessors, (7484), 5054 states have call successors, (7484) [2024-11-23 23:06:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28516 states to 28516 states and 47012 transitions. [2024-11-23 23:06:14,202 INFO L78 Accepts]: Start accepts. Automaton has 28516 states and 47012 transitions. Word has length 239 [2024-11-23 23:06:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:14,203 INFO L471 AbstractCegarLoop]: Abstraction has 28516 states and 47012 transitions. [2024-11-23 23:06:14,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 23:06:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28516 states and 47012 transitions. [2024-11-23 23:06:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-23 23:06:14,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:14,244 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:14,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:06:14,245 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:14,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 347276123, now seen corresponding path program 1 times [2024-11-23 23:06:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:14,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296691144] [2024-11-23 23:06:14,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:14,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-23 23:06:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296691144] [2024-11-23 23:06:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296691144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321381139] [2024-11-23 23:06:14,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:14,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:14,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:14,571 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:14,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-23 23:06:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:15,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:06:15,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-23 23:06:15,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321381139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-23 23:06:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754398829] [2024-11-23 23:06:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:15,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:06:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:15,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:06:15,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:06:15,170 INFO L87 Difference]: Start difference. First operand 28516 states and 47012 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:06:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:16,790 INFO L93 Difference]: Finished difference Result 34699 states and 57030 transitions. [2024-11-23 23:06:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:06:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2024-11-23 23:06:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:16,850 INFO L225 Difference]: With dead ends: 34699 [2024-11-23 23:06:16,850 INFO L226 Difference]: Without dead ends: 13802 [2024-11-23 23:06:16,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:06:16,902 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 1 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:16,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2598 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:06:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13802 states. [2024-11-23 23:06:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13802 to 13802. [2024-11-23 23:06:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 10557 states have (on average 1.588898361276878) internal successors, (16774), 10957 states have internal predecessors, (16774), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 845 states have return successors, (3327), 2390 states have call predecessors, (3327), 2395 states have call successors, (3327) [2024-11-23 23:06:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 22500 transitions. [2024-11-23 23:06:17,790 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 22500 transitions. Word has length 239 [2024-11-23 23:06:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:17,790 INFO L471 AbstractCegarLoop]: Abstraction has 13802 states and 22500 transitions. [2024-11-23 23:06:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:06:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 22500 transitions. [2024-11-23 23:06:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-23 23:06:17,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:17,799 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-23 23:06:18,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-23 23:06:18,000 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:18,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1284973966, now seen corresponding path program 1 times [2024-11-23 23:06:18,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:18,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030469195] [2024-11-23 23:06:18,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:18,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-23 23:06:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:18,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030469195] [2024-11-23 23:06:18,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030469195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:18,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667082721] [2024-11-23 23:06:18,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:18,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:18,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:18,391 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:18,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-23 23:06:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:18,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:06:18,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-23 23:06:18,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667082721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:18,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:18,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-23 23:06:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461670469] [2024-11-23 23:06:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:18,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:06:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:19,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:06:19,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:06:19,000 INFO L87 Difference]: Start difference. First operand 13802 states and 22500 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 23:06:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:19,846 INFO L93 Difference]: Finished difference Result 27558 states and 45126 transitions. [2024-11-23 23:06:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:06:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 243 [2024-11-23 23:06:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:19,907 INFO L225 Difference]: With dead ends: 27558 [2024-11-23 23:06:19,907 INFO L226 Difference]: Without dead ends: 13902 [2024-11-23 23:06:19,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:06:19,941 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 0 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4368 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:19,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4368 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:06:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13902 states. [2024-11-23 23:06:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13902 to 13902. [2024-11-23 23:06:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13902 states, 10637 states have (on average 1.5844693052552412) internal successors, (16854), 11037 states have internal predecessors, (16854), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 865 states have return successors, (3347), 2410 states have call predecessors, (3347), 2395 states have call successors, (3347) [2024-11-23 23:06:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13902 states to 13902 states and 22600 transitions. [2024-11-23 23:06:20,813 INFO L78 Accepts]: Start accepts. Automaton has 13902 states and 22600 transitions. Word has length 243 [2024-11-23 23:06:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:20,813 INFO L471 AbstractCegarLoop]: Abstraction has 13902 states and 22600 transitions. [2024-11-23 23:06:20,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-23 23:06:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13902 states and 22600 transitions. [2024-11-23 23:06:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-23 23:06:20,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:20,819 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 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, 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, 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, 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] [2024-11-23 23:06:20,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-23 23:06:21,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-23 23:06:21,020 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:21,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1050217806, now seen corresponding path program 1 times [2024-11-23 23:06:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903421991] [2024-11-23 23:06:21,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-11-23 23:06:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903421991] [2024-11-23 23:06:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903421991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402730661] [2024-11-23 23:06:21,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:21,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:21,539 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:21,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-23 23:06:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:22,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:06:22,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-23 23:06:22,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402730661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:22,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:22,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 23:06:22,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318822098] [2024-11-23 23:06:22,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:22,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:06:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:22,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:06:22,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:06:22,177 INFO L87 Difference]: Start difference. First operand 13902 states and 22600 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 23:06:23,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:23,084 INFO L93 Difference]: Finished difference Result 28204 states and 46508 transitions. [2024-11-23 23:06:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:23,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 345 [2024-11-23 23:06:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:23,165 INFO L225 Difference]: With dead ends: 28204 [2024-11-23 23:06:23,165 INFO L226 Difference]: Without dead ends: 14442 [2024-11-23 23:06:23,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:06:23,206 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 144 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:23,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2428 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:06:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14442 states. [2024-11-23 23:06:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14442 to 14370. [2024-11-23 23:06:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14370 states, 11093 states have (on average 1.5983052375371856) internal successors, (17730), 11493 states have internal predecessors, (17730), 2399 states have call successors, (2399), 574 states have call predecessors, (2399), 877 states have return successors, (3347), 2410 states have call predecessors, (3347), 2395 states have call successors, (3347) [2024-11-23 23:06:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14370 states to 14370 states and 23476 transitions. [2024-11-23 23:06:23,966 INFO L78 Accepts]: Start accepts. Automaton has 14370 states and 23476 transitions. Word has length 345 [2024-11-23 23:06:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:23,967 INFO L471 AbstractCegarLoop]: Abstraction has 14370 states and 23476 transitions. [2024-11-23 23:06:23,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 23:06:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14370 states and 23476 transitions. [2024-11-23 23:06:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-23 23:06:23,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:23,974 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:23,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-23 23:06:24,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:24,174 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:24,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash 228421835, now seen corresponding path program 1 times [2024-11-23 23:06:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:24,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310513736] [2024-11-23 23:06:24,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-23 23:06:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310513736] [2024-11-23 23:06:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310513736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371558766] [2024-11-23 23:06:24,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:24,708 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:24,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c71870-cbcc-4561-a682-dfe0d4d31108/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-23 23:06:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:25,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:06:25,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-23 23:06:25,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371558766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-11-23 23:06:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235000510] [2024-11-23 23:06:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:25,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:06:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:25,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:06:25,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:06:25,305 INFO L87 Difference]: Start difference. First operand 14370 states and 23476 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)