./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.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_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/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_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/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_c62aca35-cbf1-4a3b-b427-356b546b314b/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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:46:14,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:46:14,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:46:14,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:46:14,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:46:14,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:46:14,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:46:14,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:46:14,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:46:14,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:46:14,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:46:14,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:46:14,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:46:14,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:46:14,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:46:14,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:46:14,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:46:14,985 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:46:14,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:46:14,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:46:14,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:46:14,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:46:14,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:46:14,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:46:14,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:46:14,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:46:14,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:46:14,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:46:14,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:46:14,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:46:14,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:46:14,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:46:14,989 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_c62aca35-cbf1-4a3b-b427-356b546b314b/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 -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2024-11-23 23:46:15,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:46:15,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:46:15,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:46:15,346 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:46:15,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:46:15,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2024-11-23 23:46:18,488 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/data/3f62edb23/b5ec94d485c14757835ea43aef21804c/FLAGd35ea0d80 [2024-11-23 23:46:18,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:46:18,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2024-11-23 23:46:18,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/data/3f62edb23/b5ec94d485c14757835ea43aef21804c/FLAGd35ea0d80 [2024-11-23 23:46:18,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/data/3f62edb23/b5ec94d485c14757835ea43aef21804c [2024-11-23 23:46:18,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:46:18,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:46:19,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:46:19,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:46:19,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:46:19,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:46:18" (1/1) ... [2024-11-23 23:46:19,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707c8312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19, skipping insertion in model container [2024-11-23 23:46:19,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:46:18" (1/1) ... [2024-11-23 23:46:19,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:46:19,509 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_c62aca35-cbf1-4a3b-b427-356b546b314b/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2024-11-23 23:46:19,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:46:19,702 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:46:19,711 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-23 23:46:19,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1596] [2024-11-23 23:46:19,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1605] [2024-11-23 23:46:19,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2267] [2024-11-23 23:46:19,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2281] [2024-11-23 23:46:19,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2462] [2024-11-23 23:46:19,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2581] [2024-11-23 23:46:19,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2673] [2024-11-23 23:46:19,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3026] [2024-11-23 23:46:19,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3392] [2024-11-23 23:46:19,809 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_c62aca35-cbf1-4a3b-b427-356b546b314b/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2024-11-23 23:46:19,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:46:19,939 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:46:19,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19 WrapperNode [2024-11-23 23:46:19,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:46:19,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:46:19,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:46:19,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:46:19,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:19,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,023 INFO L138 Inliner]: procedures = 94, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1117 [2024-11-23 23:46:20,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:46:20,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:46:20,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:46:20,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:46:20,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,072 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 23:46:20,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:46:20,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:46:20,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:46:20,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:46:20,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (1/1) ... [2024-11-23 23:46:20,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:46:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:20,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:46:20,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:46:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:46:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 23:46:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 23:46:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-23 23:46:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-23 23:46:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-23 23:46:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-23 23:46:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 23:46:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 23:46:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 23:46:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 23:46:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 23:46:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 23:46:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 23:46:20,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 23:46:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 23:46:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 23:46:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 23:46:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 23:46:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-23 23:46:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-23 23:46:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 23:46:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 23:46:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 23:46:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 23:46:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 23:46:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 23:46:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 23:46:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 23:46:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 23:46:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 23:46:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 23:46:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 23:46:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 23:46:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 23:46:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 23:46:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 23:46:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 23:46:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:46:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 23:46:20,245 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 23:46:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 23:46:20,245 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 23:46:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 23:46:20,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 23:46:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:46:20,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:46:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 23:46:20,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 23:46:20,465 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:46:20,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:46:21,965 INFO L? ?]: Removed 449 outVars from TransFormulas that were not future-live. [2024-11-23 23:46:21,966 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:46:22,004 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:46:22,005 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:46:22,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:46:22 BoogieIcfgContainer [2024-11-23 23:46:22,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:46:22,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:46:22,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:46:22,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:46:22,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:46:18" (1/3) ... [2024-11-23 23:46:22,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9f67dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:46:22, skipping insertion in model container [2024-11-23 23:46:22,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:46:19" (2/3) ... [2024-11-23 23:46:22,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9f67dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:46:22, skipping insertion in model container [2024-11-23 23:46:22,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:46:22" (3/3) ... [2024-11-23 23:46:22,022 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2024-11-23 23:46:22,040 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:46:22,042 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product19.cil.c that has 25 procedures, 559 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:46:22,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:46:22,166 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;@149a1dff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:46:22,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:46:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 437 states have (on average 1.6910755148741419) internal successors, (739), 458 states have internal predecessors, (739), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:46:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:46:22,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:22,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:22,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:22,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1079866821, now seen corresponding path program 1 times [2024-11-23 23:46:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:22,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787341310] [2024-11-23 23:46:22,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:23,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787341310] [2024-11-23 23:46:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787341310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:23,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673828383] [2024-11-23 23:46:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:23,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:23,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:23,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:23,092 INFO L87 Difference]: Start difference. First operand has 559 states, 437 states have (on average 1.6910755148741419) internal successors, (739), 458 states have internal predecessors, (739), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:23,299 INFO L93 Difference]: Finished difference Result 1098 states and 1837 transitions. [2024-11-23 23:46:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:23,302 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-23 23:46:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:23,328 INFO L225 Difference]: With dead ends: 1098 [2024-11-23 23:46:23,329 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:46:23,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:23,339 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 5 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:23,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2726 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:46:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-23 23:46:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 431 states have (on average 1.6867749419953597) internal successors, (727), 450 states have internal predecessors, (727), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 914 transitions. [2024-11-23 23:46:23,455 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 914 transitions. Word has length 102 [2024-11-23 23:46:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:23,456 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 914 transitions. [2024-11-23 23:46:23,456 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 914 transitions. [2024-11-23 23:46:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:46:23,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:23,469 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:23,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:46:23,470 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:23,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2022508923, now seen corresponding path program 1 times [2024-11-23 23:46:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374176053] [2024-11-23 23:46:23,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374176053] [2024-11-23 23:46:23,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374176053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:23,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:23,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:23,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963802311] [2024-11-23 23:46:23,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:23,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:23,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:23,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:23,792 INFO L87 Difference]: Start difference. First operand 551 states and 914 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:23,900 INFO L93 Difference]: Finished difference Result 1084 states and 1805 transitions. [2024-11-23 23:46:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-11-23 23:46:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:23,907 INFO L225 Difference]: With dead ends: 1084 [2024-11-23 23:46:23,907 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:46:23,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:23,912 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 4 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:23,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2705 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:46:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-23 23:46:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 431 states have (on average 1.6844547563805103) internal successors, (726), 450 states have internal predecessors, (726), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 913 transitions. [2024-11-23 23:46:23,979 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 913 transitions. Word has length 104 [2024-11-23 23:46:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:23,980 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 913 transitions. [2024-11-23 23:46:23,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 913 transitions. [2024-11-23 23:46:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:46:23,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:23,991 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:23,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:46:23,992 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:23,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 569140125, now seen corresponding path program 1 times [2024-11-23 23:46:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:23,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018023802] [2024-11-23 23:46:23,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:24,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:24,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018023802] [2024-11-23 23:46:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018023802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696306544] [2024-11-23 23:46:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:24,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:24,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:24,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:24,299 INFO L87 Difference]: Start difference. First operand 551 states and 913 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:24,396 INFO L93 Difference]: Finished difference Result 1084 states and 1804 transitions. [2024-11-23 23:46:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:24,397 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-11-23 23:46:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:24,404 INFO L225 Difference]: With dead ends: 1084 [2024-11-23 23:46:24,405 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:46:24,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:24,409 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 3 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:24,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2705 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:46:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-23 23:46:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 431 states have (on average 1.6821345707656612) internal successors, (725), 450 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 912 transitions. [2024-11-23 23:46:24,439 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 912 transitions. Word has length 105 [2024-11-23 23:46:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:24,439 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 912 transitions. [2024-11-23 23:46:24,439 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 912 transitions. [2024-11-23 23:46:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:46:24,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:24,444 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:24,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:46:24,444 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:24,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:24,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1121816385, now seen corresponding path program 1 times [2024-11-23 23:46:24,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:24,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172653425] [2024-11-23 23:46:24,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:24,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172653425] [2024-11-23 23:46:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172653425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:24,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:24,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549454166] [2024-11-23 23:46:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:24,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:24,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:24,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:24,676 INFO L87 Difference]: Start difference. First operand 551 states and 912 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:24,748 INFO L93 Difference]: Finished difference Result 1084 states and 1803 transitions. [2024-11-23 23:46:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-23 23:46:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:24,754 INFO L225 Difference]: With dead ends: 1084 [2024-11-23 23:46:24,755 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:46:24,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:24,760 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 2 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:24,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2705 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:46:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-23 23:46:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 431 states have (on average 1.679814385150812) internal successors, (724), 450 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 911 transitions. [2024-11-23 23:46:24,807 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 911 transitions. Word has length 106 [2024-11-23 23:46:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:24,808 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 911 transitions. [2024-11-23 23:46:24,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 911 transitions. [2024-11-23 23:46:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:46:24,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:24,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:24,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:46:24,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:24,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1588057375, now seen corresponding path program 1 times [2024-11-23 23:46:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655718190] [2024-11-23 23:46:24,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:25,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655718190] [2024-11-23 23:46:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655718190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:25,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724045136] [2024-11-23 23:46:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:25,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:25,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:25,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:25,015 INFO L87 Difference]: Start difference. First operand 551 states and 911 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:25,093 INFO L93 Difference]: Finished difference Result 1084 states and 1802 transitions. [2024-11-23 23:46:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:25,094 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-23 23:46:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:25,100 INFO L225 Difference]: With dead ends: 1084 [2024-11-23 23:46:25,101 INFO L226 Difference]: Without dead ends: 551 [2024-11-23 23:46:25,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:25,104 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 1 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2705 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 23:46:25,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2705 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-23 23:46:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-23 23:46:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 431 states have (on average 1.677494199535963) internal successors, (723), 450 states have internal predecessors, (723), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 910 transitions. [2024-11-23 23:46:25,144 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 910 transitions. Word has length 107 [2024-11-23 23:46:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:25,144 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 910 transitions. [2024-11-23 23:46:25,145 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 910 transitions. [2024-11-23 23:46:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:46:25,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:25,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:25,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:46:25,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:25,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1552144387, now seen corresponding path program 1 times [2024-11-23 23:46:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:25,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905083542] [2024-11-23 23:46:25,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:25,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905083542] [2024-11-23 23:46:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905083542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:25,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:25,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:46:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455098936] [2024-11-23 23:46:25,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:25,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:46:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:25,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:46:25,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:25,489 INFO L87 Difference]: Start difference. First operand 551 states and 910 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:46:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:25,644 INFO L93 Difference]: Finished difference Result 1050 states and 1734 transitions. [2024-11-23 23:46:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:46:25,645 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 23:46:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:25,651 INFO L225 Difference]: With dead ends: 1050 [2024-11-23 23:46:25,652 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 23:46:25,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:46:25,656 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 91 mSDsluCounter, 4419 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:25,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5319 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 23:46:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2024-11-23 23:46:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6734693877551021) internal successors, (738), 462 states have internal predecessors, (738), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2024-11-23 23:46:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 929 transitions. [2024-11-23 23:46:25,702 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 929 transitions. Word has length 108 [2024-11-23 23:46:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:25,703 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 929 transitions. [2024-11-23 23:46:25,703 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:46:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 929 transitions. [2024-11-23 23:46:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:46:25,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:25,709 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:25,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:46:25,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:25,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash 581853380, now seen corresponding path program 1 times [2024-11-23 23:46:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:25,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514336999] [2024-11-23 23:46:25,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514336999] [2024-11-23 23:46:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514336999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:25,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:25,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408699578] [2024-11-23 23:46:25,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:25,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:25,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:25,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:25,884 INFO L87 Difference]: Start difference. First operand 564 states and 929 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:25,962 INFO L93 Difference]: Finished difference Result 1102 states and 1828 transitions. [2024-11-23 23:46:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:25,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-23 23:46:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:25,971 INFO L225 Difference]: With dead ends: 1102 [2024-11-23 23:46:25,972 INFO L226 Difference]: Without dead ends: 545 [2024-11-23 23:46:25,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:25,975 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 0 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:25,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2707 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-23 23:46:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-23 23:46:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 425 states have (on average 1.668235294117647) internal successors, (709), 444 states have internal predecessors, (709), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 896 transitions. [2024-11-23 23:46:26,004 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 896 transitions. Word has length 108 [2024-11-23 23:46:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:26,004 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 896 transitions. [2024-11-23 23:46:26,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 896 transitions. [2024-11-23 23:46:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:46:26,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:26,023 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:26,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:46:26,024 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:26,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash -387836910, now seen corresponding path program 1 times [2024-11-23 23:46:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:26,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608437081] [2024-11-23 23:46:26,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:26,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608437081] [2024-11-23 23:46:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608437081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225003619] [2024-11-23 23:46:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:26,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:26,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:26,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:26,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:26,231 INFO L87 Difference]: Start difference. First operand 545 states and 896 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:26,490 INFO L93 Difference]: Finished difference Result 1047 states and 1726 transitions. [2024-11-23 23:46:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-23 23:46:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:26,497 INFO L225 Difference]: With dead ends: 1047 [2024-11-23 23:46:26,497 INFO L226 Difference]: Without dead ends: 554 [2024-11-23 23:46:26,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:26,501 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 55 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:26,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4236 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:46:26,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-23 23:46:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-11-23 23:46:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 444 states have internal predecessors, (705), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 892 transitions. [2024-11-23 23:46:26,534 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 892 transitions. Word has length 109 [2024-11-23 23:46:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:26,534 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 892 transitions. [2024-11-23 23:46:26,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 892 transitions. [2024-11-23 23:46:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 23:46:26,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:26,539 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:26,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:46:26,539 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:26,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 282941600, now seen corresponding path program 1 times [2024-11-23 23:46:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:26,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373108048] [2024-11-23 23:46:26,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:26,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:26,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:26,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373108048] [2024-11-23 23:46:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373108048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:26,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:26,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073154999] [2024-11-23 23:46:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:26,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:26,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:26,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:26,779 INFO L87 Difference]: Start difference. First operand 545 states and 892 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:27,024 INFO L93 Difference]: Finished difference Result 1047 states and 1722 transitions. [2024-11-23 23:46:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-23 23:46:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:27,030 INFO L225 Difference]: With dead ends: 1047 [2024-11-23 23:46:27,031 INFO L226 Difference]: Without dead ends: 554 [2024-11-23 23:46:27,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:27,034 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 54 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:27,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4236 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:46:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-23 23:46:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-11-23 23:46:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 425 states have (on average 1.6494117647058824) internal successors, (701), 444 states have internal predecessors, (701), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 888 transitions. [2024-11-23 23:46:27,061 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 888 transitions. Word has length 110 [2024-11-23 23:46:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:27,061 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 888 transitions. [2024-11-23 23:46:27,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 888 transitions. [2024-11-23 23:46:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:46:27,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:27,065 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:27,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:46:27,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:27,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1346862509, now seen corresponding path program 1 times [2024-11-23 23:46:27,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:27,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858577862] [2024-11-23 23:46:27,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:27,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858577862] [2024-11-23 23:46:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858577862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:27,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:27,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051710268] [2024-11-23 23:46:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:27,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:27,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:27,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:27,292 INFO L87 Difference]: Start difference. First operand 545 states and 888 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:27,527 INFO L93 Difference]: Finished difference Result 1047 states and 1718 transitions. [2024-11-23 23:46:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-23 23:46:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:27,536 INFO L225 Difference]: With dead ends: 1047 [2024-11-23 23:46:27,536 INFO L226 Difference]: Without dead ends: 554 [2024-11-23 23:46:27,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:27,539 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 53 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:27,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4218 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:46:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-23 23:46:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-11-23 23:46:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 425 states have (on average 1.64) internal successors, (697), 444 states have internal predecessors, (697), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 884 transitions. [2024-11-23 23:46:27,570 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 884 transitions. Word has length 111 [2024-11-23 23:46:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:27,570 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 884 transitions. [2024-11-23 23:46:27,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 884 transitions. [2024-11-23 23:46:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:46:27,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:27,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:27,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:46:27,576 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:27,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 946680109, now seen corresponding path program 1 times [2024-11-23 23:46:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:27,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98903874] [2024-11-23 23:46:27,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:27,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98903874] [2024-11-23 23:46:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98903874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:27,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:46:27,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492866110] [2024-11-23 23:46:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:27,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:46:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:27,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:46:27,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:27,837 INFO L87 Difference]: Start difference. First operand 545 states and 884 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:46:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:27,963 INFO L93 Difference]: Finished difference Result 1038 states and 1700 transitions. [2024-11-23 23:46:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:46:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-11-23 23:46:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:27,972 INFO L225 Difference]: With dead ends: 1038 [2024-11-23 23:46:27,972 INFO L226 Difference]: Without dead ends: 524 [2024-11-23 23:46:27,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:46:27,978 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 84 mSDsluCounter, 4292 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5165 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:27,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5165 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-23 23:46:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-23 23:46:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 404 states have (on average 1.641089108910891) internal successors, (663), 423 states have internal predecessors, (663), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 850 transitions. [2024-11-23 23:46:28,013 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 850 transitions. Word has length 111 [2024-11-23 23:46:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:28,014 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 850 transitions. [2024-11-23 23:46:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:46:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 850 transitions. [2024-11-23 23:46:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:46:28,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:28,019 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:28,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:46:28,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1713295899, now seen corresponding path program 1 times [2024-11-23 23:46:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245891133] [2024-11-23 23:46:28,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:28,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:28,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245891133] [2024-11-23 23:46:28,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245891133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:28,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:28,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533314059] [2024-11-23 23:46:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:28,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:28,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:28,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:28,245 INFO L87 Difference]: Start difference. First operand 524 states and 850 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:28,360 INFO L93 Difference]: Finished difference Result 1017 states and 1666 transitions. [2024-11-23 23:46:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-23 23:46:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:28,388 INFO L225 Difference]: With dead ends: 1017 [2024-11-23 23:46:28,388 INFO L226 Difference]: Without dead ends: 524 [2024-11-23 23:46:28,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:28,393 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 17 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:28,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4156 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-23 23:46:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-23 23:46:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 404 states have (on average 1.6386138613861385) internal successors, (662), 423 states have internal predecessors, (662), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 849 transitions. [2024-11-23 23:46:28,422 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 849 transitions. Word has length 112 [2024-11-23 23:46:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:28,422 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 849 transitions. [2024-11-23 23:46:28,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 849 transitions. [2024-11-23 23:46:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:46:28,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:28,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:28,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:46:28,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:28,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1932452680, now seen corresponding path program 1 times [2024-11-23 23:46:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743310513] [2024-11-23 23:46:28,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743310513] [2024-11-23 23:46:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743310513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:28,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666585353] [2024-11-23 23:46:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:28,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:28,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:28,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:28,619 INFO L87 Difference]: Start difference. First operand 524 states and 849 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:28,727 INFO L93 Difference]: Finished difference Result 1017 states and 1665 transitions. [2024-11-23 23:46:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:28,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-23 23:46:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:28,733 INFO L225 Difference]: With dead ends: 1017 [2024-11-23 23:46:28,733 INFO L226 Difference]: Without dead ends: 524 [2024-11-23 23:46:28,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:28,739 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 16 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:28,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4156 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-23 23:46:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-23 23:46:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 404 states have (on average 1.636138613861386) internal successors, (661), 423 states have internal predecessors, (661), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 848 transitions. [2024-11-23 23:46:28,768 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 848 transitions. Word has length 113 [2024-11-23 23:46:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:28,769 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 848 transitions. [2024-11-23 23:46:28,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 848 transitions. [2024-11-23 23:46:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 23:46:28,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:28,773 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:28,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:46:28,773 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:28,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1881001878, now seen corresponding path program 1 times [2024-11-23 23:46:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394193469] [2024-11-23 23:46:28,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:28,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394193469] [2024-11-23 23:46:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394193469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711878135] [2024-11-23 23:46:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:28,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:28,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:28,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:28,911 INFO L87 Difference]: Start difference. First operand 524 states and 848 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:28,989 INFO L93 Difference]: Finished difference Result 1011 states and 1653 transitions. [2024-11-23 23:46:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-23 23:46:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:28,996 INFO L225 Difference]: With dead ends: 1011 [2024-11-23 23:46:28,997 INFO L226 Difference]: Without dead ends: 524 [2024-11-23 23:46:28,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:29,000 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 5 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:29,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2498 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-23 23:46:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-23 23:46:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 404 states have (on average 1.6336633663366336) internal successors, (660), 423 states have internal predecessors, (660), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-23 23:46:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 847 transitions. [2024-11-23 23:46:29,027 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 847 transitions. Word has length 114 [2024-11-23 23:46:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:29,028 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 847 transitions. [2024-11-23 23:46:29,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:46:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 847 transitions. [2024-11-23 23:46:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 23:46:29,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:29,033 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:46:29,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:46:29,034 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:29,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash 667765267, now seen corresponding path program 1 times [2024-11-23 23:46:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812273699] [2024-11-23 23:46:29,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812273699] [2024-11-23 23:46:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812273699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581044739] [2024-11-23 23:46:29,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:29,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:29,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:29,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:46:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:29,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:46:29,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:29,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:29,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581044739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:29,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 23:46:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634657960] [2024-11-23 23:46:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:29,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:29,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:29,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:29,902 INFO L87 Difference]: Start difference. First operand 524 states and 847 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:30,683 INFO L93 Difference]: Finished difference Result 1011 states and 1675 transitions. [2024-11-23 23:46:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:30,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-11-23 23:46:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:30,691 INFO L225 Difference]: With dead ends: 1011 [2024-11-23 23:46:30,691 INFO L226 Difference]: Without dead ends: 532 [2024-11-23 23:46:30,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:46:30,696 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 807 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:30,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2119 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:46:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-23 23:46:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2024-11-23 23:46:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 411 states have (on average 1.635036496350365) internal successors, (672), 430 states have internal predecessors, (672), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2024-11-23 23:46:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 860 transitions. [2024-11-23 23:46:30,729 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 860 transitions. Word has length 115 [2024-11-23 23:46:30,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:30,731 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 860 transitions. [2024-11-23 23:46:30,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 860 transitions. [2024-11-23 23:46:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-23 23:46:30,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:30,735 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:30,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:46:30,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:46:30,940 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:30,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1659413501, now seen corresponding path program 1 times [2024-11-23 23:46:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470091519] [2024-11-23 23:46:30,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470091519] [2024-11-23 23:46:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470091519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879319223] [2024-11-23 23:46:31,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:31,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:31,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:31,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:46:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:31,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:46:31,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:31,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879319223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:31,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 23:46:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117122029] [2024-11-23 23:46:31,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:31,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:31,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:31,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:31,740 INFO L87 Difference]: Start difference. First operand 532 states and 860 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:32,475 INFO L93 Difference]: Finished difference Result 1027 states and 1698 transitions. [2024-11-23 23:46:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-11-23 23:46:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:32,482 INFO L225 Difference]: With dead ends: 1027 [2024-11-23 23:46:32,482 INFO L226 Difference]: Without dead ends: 540 [2024-11-23 23:46:32,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:46:32,486 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 804 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:32,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2116 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:46:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-23 23:46:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2024-11-23 23:46:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.6363636363636365) internal successors, (684), 437 states have internal predecessors, (684), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2024-11-23 23:46:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 873 transitions. [2024-11-23 23:46:32,516 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 873 transitions. Word has length 117 [2024-11-23 23:46:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:32,517 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 873 transitions. [2024-11-23 23:46:32,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 873 transitions. [2024-11-23 23:46:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:46:32,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:32,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:32,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:46:32,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:46:32,724 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:32,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1909898733, now seen corresponding path program 1 times [2024-11-23 23:46:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:32,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616362746] [2024-11-23 23:46:32,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:32,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616362746] [2024-11-23 23:46:32,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616362746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:32,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749579954] [2024-11-23 23:46:32,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:32,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:32,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:46:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:33,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:46:33,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:33,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749579954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 23:46:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793983361] [2024-11-23 23:46:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:33,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:33,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:33,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:33,494 INFO L87 Difference]: Start difference. First operand 540 states and 873 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:34,222 INFO L93 Difference]: Finished difference Result 1043 states and 1721 transitions. [2024-11-23 23:46:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-23 23:46:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:34,230 INFO L225 Difference]: With dead ends: 1043 [2024-11-23 23:46:34,230 INFO L226 Difference]: Without dead ends: 548 [2024-11-23 23:46:34,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:46:34,234 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 785 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:34,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2113 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:46:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-23 23:46:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-23 23:46:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6376470588235295) internal successors, (696), 444 states have internal predecessors, (696), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (94), 89 states have call predecessors, (94), 91 states have call successors, (94) [2024-11-23 23:46:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 886 transitions. [2024-11-23 23:46:34,274 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 886 transitions. Word has length 119 [2024-11-23 23:46:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:34,274 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 886 transitions. [2024-11-23 23:46:34,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 886 transitions. [2024-11-23 23:46:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:46:34,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:34,279 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:34,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:46:34,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:46:34,480 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:34,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash -626060405, now seen corresponding path program 1 times [2024-11-23 23:46:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92964724] [2024-11-23 23:46:34,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:34,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:34,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:34,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92964724] [2024-11-23 23:46:34,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92964724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:34,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485754932] [2024-11-23 23:46:34,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:34,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:34,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:34,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:34,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:46:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:35,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:46:35,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:35,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485754932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 23:46:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314734132] [2024-11-23 23:46:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:35,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:35,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:35,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:35,213 INFO L87 Difference]: Start difference. First operand 548 states and 886 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:35,859 INFO L93 Difference]: Finished difference Result 1059 states and 1744 transitions. [2024-11-23 23:46:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:35,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-11-23 23:46:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:35,866 INFO L225 Difference]: With dead ends: 1059 [2024-11-23 23:46:35,866 INFO L226 Difference]: Without dead ends: 556 [2024-11-23 23:46:35,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:46:35,870 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 777 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:35,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 2110 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:46:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-23 23:46:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2024-11-23 23:46:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 432 states have (on average 1.6388888888888888) internal successors, (708), 451 states have internal predecessors, (708), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-23 23:46:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 899 transitions. [2024-11-23 23:46:35,903 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 899 transitions. Word has length 121 [2024-11-23 23:46:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:35,903 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 899 transitions. [2024-11-23 23:46:35,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:46:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 899 transitions. [2024-11-23 23:46:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:46:35,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:35,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:35,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:46:36,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:46:36,108 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:36,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash -44493965, now seen corresponding path program 1 times [2024-11-23 23:46:36,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:36,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816966787] [2024-11-23 23:46:36,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:36,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:36,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816966787] [2024-11-23 23:46:36,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816966787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:36,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538327607] [2024-11-23 23:46:36,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:36,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:36,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:36,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:46:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:36,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:46:36,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:46:36,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538327607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:36,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 23:46:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945738085] [2024-11-23 23:46:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:36,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:36,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:36,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:36,836 INFO L87 Difference]: Start difference. First operand 556 states and 899 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 23:46:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:37,295 INFO L93 Difference]: Finished difference Result 604 states and 970 transitions. [2024-11-23 23:46:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2024-11-23 23:46:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:37,305 INFO L225 Difference]: With dead ends: 604 [2024-11-23 23:46:37,305 INFO L226 Difference]: Without dead ends: 589 [2024-11-23 23:46:37,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:37,306 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 782 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:37,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1524 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:46:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-23 23:46:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 558. [2024-11-23 23:46:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6359447004608294) internal successors, (710), 453 states have internal predecessors, (710), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-23 23:46:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 901 transitions. [2024-11-23 23:46:37,339 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 901 transitions. Word has length 123 [2024-11-23 23:46:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:37,340 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 901 transitions. [2024-11-23 23:46:37,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 23:46:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 901 transitions. [2024-11-23 23:46:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:46:37,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:37,344 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:37,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:37,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:37,545 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:37,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1889516050, now seen corresponding path program 1 times [2024-11-23 23:46:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139055912] [2024-11-23 23:46:37,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:46:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139055912] [2024-11-23 23:46:37,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139055912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663245444] [2024-11-23 23:46:37,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:37,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:37,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:37,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:46:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:38,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:46:38,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:46:38,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663245444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-23 23:46:38,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341753820] [2024-11-23 23:46:38,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:38,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:38,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:38,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:38,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:38,113 INFO L87 Difference]: Start difference. First operand 558 states and 901 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:46:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:38,152 INFO L93 Difference]: Finished difference Result 573 states and 919 transitions. [2024-11-23 23:46:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:38,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 129 [2024-11-23 23:46:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:38,158 INFO L225 Difference]: With dead ends: 573 [2024-11-23 23:46:38,158 INFO L226 Difference]: Without dead ends: 558 [2024-11-23 23:46:38,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 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 23:46:38,162 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 0 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:38,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3372 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-23 23:46:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-23 23:46:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6336405529953917) internal successors, (709), 453 states have internal predecessors, (709), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-23 23:46:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 900 transitions. [2024-11-23 23:46:38,199 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 900 transitions. Word has length 129 [2024-11-23 23:46:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:38,200 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 900 transitions. [2024-11-23 23:46:38,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:46:38,200 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 900 transitions. [2024-11-23 23:46:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 23:46:38,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:38,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:38,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:38,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1437113961, now seen corresponding path program 1 times [2024-11-23 23:46:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763745015] [2024-11-23 23:46:38,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 23:46:38,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763745015] [2024-11-23 23:46:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763745015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124655438] [2024-11-23 23:46:38,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:38,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:38,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:38,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:38,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:46:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:39,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:46:39,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:46:39,147 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124655438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:39,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-23 23:46:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991653645] [2024-11-23 23:46:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:39,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:46:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:39,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:46:39,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:46:39,149 INFO L87 Difference]: Start difference. First operand 558 states and 900 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:46:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:39,722 INFO L93 Difference]: Finished difference Result 1073 states and 1773 transitions. [2024-11-23 23:46:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:46:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-23 23:46:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:39,728 INFO L225 Difference]: With dead ends: 1073 [2024-11-23 23:46:39,729 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 23:46:39,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:46:39,733 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 787 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:39,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2107 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:46:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 23:46:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 23:46:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 435 states have (on average 1.6229885057471265) internal successors, (706), 455 states have internal predecessors, (706), 96 states have call successors, (96), 28 states have call predecessors, (96), 28 states have return successors, (96), 89 states have call predecessors, (96), 91 states have call successors, (96) [2024-11-23 23:46:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 898 transitions. [2024-11-23 23:46:39,766 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 898 transitions. Word has length 140 [2024-11-23 23:46:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:39,767 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 898 transitions. [2024-11-23 23:46:39,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:46:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 898 transitions. [2024-11-23 23:46:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 23:46:39,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:39,771 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:39,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:46:39,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 23:46:39,972 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:39,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash -664639031, now seen corresponding path program 1 times [2024-11-23 23:46:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375605906] [2024-11-23 23:46:39,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 23:46:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375605906] [2024-11-23 23:46:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375605906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439032770] [2024-11-23 23:46:40,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:40,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:40,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:40,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:40,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:46:40,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:46:40,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439032770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-23 23:46:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139045789] [2024-11-23 23:46:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:40,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:46:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:40,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:46:40,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:46:40,950 INFO L87 Difference]: Start difference. First operand 560 states and 898 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-23 23:46:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:45,088 INFO L93 Difference]: Finished difference Result 1926 states and 3155 transitions. [2024-11-23 23:46:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:46:45,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 140 [2024-11-23 23:46:45,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:45,101 INFO L225 Difference]: With dead ends: 1926 [2024-11-23 23:46:45,101 INFO L226 Difference]: Without dead ends: 1409 [2024-11-23 23:46:45,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:46:45,107 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2332 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 4640 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 5154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 4640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:45,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2417 Valid, 2758 Invalid, 5154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [514 Valid, 4640 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 23:46:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-11-23 23:46:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1295. [2024-11-23 23:46:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1012 states have (on average 1.6422924901185771) internal successors, (1662), 1053 states have internal predecessors, (1662), 214 states have call successors, (214), 61 states have call predecessors, (214), 68 states have return successors, (235), 206 states have call predecessors, (235), 209 states have call successors, (235) [2024-11-23 23:46:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 2111 transitions. [2024-11-23 23:46:45,196 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 2111 transitions. Word has length 140 [2024-11-23 23:46:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:45,196 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 2111 transitions. [2024-11-23 23:46:45,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-23 23:46:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 2111 transitions. [2024-11-23 23:46:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 23:46:45,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:45,202 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:45,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:46:45,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 23:46:45,403 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:45,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1521247817, now seen corresponding path program 1 times [2024-11-23 23:46:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026616090] [2024-11-23 23:46:45,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026616090] [2024-11-23 23:46:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026616090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568759169] [2024-11-23 23:46:45,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:45,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:45,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:46:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:46,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:46:46,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:46,343 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 23:46:46,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:46,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568759169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:46,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-23 23:46:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231164341] [2024-11-23 23:46:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:46,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:46:46,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:46,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:46:46,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:46:46,346 INFO L87 Difference]: Start difference. First operand 1295 states and 2111 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-23 23:46:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:49,541 INFO L93 Difference]: Finished difference Result 2803 states and 4596 transitions. [2024-11-23 23:46:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:46:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2024-11-23 23:46:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:49,579 INFO L225 Difference]: With dead ends: 2803 [2024-11-23 23:46:49,579 INFO L226 Difference]: Without dead ends: 1553 [2024-11-23 23:46:49,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:46:49,586 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 2082 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:49,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 2038 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:46:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-23 23:46:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1366. [2024-11-23 23:46:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1064 states have (on average 1.6296992481203008) internal successors, (1734), 1111 states have internal predecessors, (1734), 222 states have call successors, (222), 66 states have call predecessors, (222), 79 states have return successors, (261), 214 states have call predecessors, (261), 217 states have call successors, (261) [2024-11-23 23:46:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2217 transitions. [2024-11-23 23:46:49,695 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2217 transitions. Word has length 142 [2024-11-23 23:46:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:49,695 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2217 transitions. [2024-11-23 23:46:49,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-23 23:46:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2217 transitions. [2024-11-23 23:46:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 23:46:49,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:49,700 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 23:46:49,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:49,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 23:46:49,905 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:49,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1702986322, now seen corresponding path program 1 times [2024-11-23 23:46:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222180223] [2024-11-23 23:46:49,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222180223] [2024-11-23 23:46:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222180223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110503024] [2024-11-23 23:46:50,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:50,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:50,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:50,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:46:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:50,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:46:50,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:46:50,705 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110503024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:50,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:50,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-23 23:46:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623823196] [2024-11-23 23:46:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:50,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:46:50,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:50,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:46:50,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:46:50,707 INFO L87 Difference]: Start difference. First operand 1366 states and 2217 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:46:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:50,828 INFO L93 Difference]: Finished difference Result 3385 states and 5560 transitions. [2024-11-23 23:46:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:46:50,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2024-11-23 23:46:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:50,852 INFO L225 Difference]: With dead ends: 3385 [2024-11-23 23:46:50,852 INFO L226 Difference]: Without dead ends: 2067 [2024-11-23 23:46:50,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 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 23:46:50,859 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 787 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:50,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2339 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2024-11-23 23:46:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1362. [2024-11-23 23:46:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1062 states have (on average 1.6290018832391713) internal successors, (1730), 1107 states have internal predecessors, (1730), 222 states have call successors, (222), 66 states have call predecessors, (222), 77 states have return successors, (252), 214 states have call predecessors, (252), 217 states have call successors, (252) [2024-11-23 23:46:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2204 transitions. [2024-11-23 23:46:50,972 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2204 transitions. Word has length 147 [2024-11-23 23:46:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:50,973 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 2204 transitions. [2024-11-23 23:46:50,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:46:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2204 transitions. [2024-11-23 23:46:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 23:46:50,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:50,980 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 23:46:50,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:46:51,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:51,185 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:51,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 805593044, now seen corresponding path program 1 times [2024-11-23 23:46:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657360621] [2024-11-23 23:46:51,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657360621] [2024-11-23 23:46:51,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657360621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38221805] [2024-11-23 23:46:51,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:51,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:51,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:51,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:46:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:51,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:46:51,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:52,087 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 23:46:52,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38221805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:52,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:52,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:46:52,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585650057] [2024-11-23 23:46:52,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:52,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:52,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:52,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:52,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:46:52,090 INFO L87 Difference]: Start difference. First operand 1362 states and 2204 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:46:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:54,219 INFO L93 Difference]: Finished difference Result 4261 states and 7019 transitions. [2024-11-23 23:46:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2024-11-23 23:46:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:54,241 INFO L225 Difference]: With dead ends: 4261 [2024-11-23 23:46:54,241 INFO L226 Difference]: Without dead ends: 2944 [2024-11-23 23:46:54,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 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 23:46:54,247 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 1865 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:54,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 916 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:46:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2024-11-23 23:46:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2832. [2024-11-23 23:46:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2179 states have (on average 1.6319412574575494) internal successors, (3556), 2279 states have internal predecessors, (3556), 495 states have call successors, (495), 127 states have call predecessors, (495), 157 states have return successors, (607), 487 states have call predecessors, (607), 490 states have call successors, (607) [2024-11-23 23:46:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4658 transitions. [2024-11-23 23:46:54,490 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4658 transitions. Word has length 147 [2024-11-23 23:46:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:54,491 INFO L471 AbstractCegarLoop]: Abstraction has 2832 states and 4658 transitions. [2024-11-23 23:46:54,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:46:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4658 transitions. [2024-11-23 23:46:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 23:46:54,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:54,497 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 23:46:54,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:54,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:54,702 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:54,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash -796557845, now seen corresponding path program 1 times [2024-11-23 23:46:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483261677] [2024-11-23 23:46:54,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:55,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483261677] [2024-11-23 23:46:55,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483261677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81570656] [2024-11-23 23:46:55,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:55,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:55,067 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:55,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:46:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:55,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:46:55,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:55,602 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 23:46:55,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:55,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81570656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:55,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:55,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:46:55,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623506324] [2024-11-23 23:46:55,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:55,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:55,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:55,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:46:55,604 INFO L87 Difference]: Start difference. First operand 2832 states and 4658 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:46:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:57,643 INFO L93 Difference]: Finished difference Result 9098 states and 15287 transitions. [2024-11-23 23:46:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2024-11-23 23:46:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:57,699 INFO L225 Difference]: With dead ends: 9098 [2024-11-23 23:46:57,699 INFO L226 Difference]: Without dead ends: 6311 [2024-11-23 23:46:57,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 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 23:46:57,716 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1872 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:57,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 876 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:46:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2024-11-23 23:46:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 6072. [2024-11-23 23:46:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 4592 states have (on average 1.6284843205574913) internal successors, (7478), 4824 states have internal predecessors, (7478), 1154 states have call successors, (1154), 249 states have call predecessors, (1154), 325 states have return successors, (1556), 1150 states have call predecessors, (1556), 1149 states have call successors, (1556) [2024-11-23 23:46:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 10188 transitions. [2024-11-23 23:46:58,252 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 10188 transitions. Word has length 148 [2024-11-23 23:46:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:58,253 INFO L471 AbstractCegarLoop]: Abstraction has 6072 states and 10188 transitions. [2024-11-23 23:46:58,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:46:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 10188 transitions. [2024-11-23 23:46:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:46:58,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:58,259 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 23:46:58,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:58,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:46:58,461 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:58,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1076376054, now seen corresponding path program 1 times [2024-11-23 23:46:58,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:58,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346310416] [2024-11-23 23:46:58,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:58,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:58,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346310416] [2024-11-23 23:46:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346310416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151828465] [2024-11-23 23:46:58,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:58,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:58,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:58,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:46:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:59,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:46:59,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:59,316 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 23:46:59,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151828465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:59,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:59,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:46:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877184919] [2024-11-23 23:46:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:59,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:59,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:59,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:46:59,318 INFO L87 Difference]: Start difference. First operand 6072 states and 10188 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:01,958 INFO L93 Difference]: Finished difference Result 19914 states and 34482 transitions. [2024-11-23 23:47:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:47:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2024-11-23 23:47:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:02,085 INFO L225 Difference]: With dead ends: 19914 [2024-11-23 23:47:02,085 INFO L226 Difference]: Without dead ends: 13887 [2024-11-23 23:47:02,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 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 23:47:02,187 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 1860 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:02,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 870 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:47:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2024-11-23 23:47:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 13393. [2024-11-23 23:47:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13393 states, 9921 states have (on average 1.6208043543997581) internal successors, (16080), 10475 states have internal predecessors, (16080), 2790 states have call successors, (2790), 493 states have call predecessors, (2790), 681 states have return successors, (4230), 2806 states have call predecessors, (4230), 2785 states have call successors, (4230) [2024-11-23 23:47:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13393 states to 13393 states and 23100 transitions. [2024-11-23 23:47:03,302 INFO L78 Accepts]: Start accepts. Automaton has 13393 states and 23100 transitions. Word has length 149 [2024-11-23 23:47:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:03,303 INFO L471 AbstractCegarLoop]: Abstraction has 13393 states and 23100 transitions. [2024-11-23 23:47:03,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13393 states and 23100 transitions. [2024-11-23 23:47:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-23 23:47:03,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:03,310 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 23:47:03,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 23:47:03,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:47:03,511 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:03,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -992211315, now seen corresponding path program 1 times [2024-11-23 23:47:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:03,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666064943] [2024-11-23 23:47:03,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:47:03,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:03,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666064943] [2024-11-23 23:47:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666064943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:03,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513347289] [2024-11-23 23:47:03,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:03,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:03,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:03,962 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:03,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:47:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:04,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:47:04,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:04,560 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 23:47:04,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:47:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513347289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:47:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:47:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269266204] [2024-11-23 23:47:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:04,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:47:04,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:04,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:47:04,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:47:04,564 INFO L87 Difference]: Start difference. First operand 13393 states and 23100 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:08,179 INFO L93 Difference]: Finished difference Result 44695 states and 81113 transitions. [2024-11-23 23:47:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:47:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-23 23:47:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:08,491 INFO L225 Difference]: With dead ends: 44695 [2024-11-23 23:47:08,491 INFO L226 Difference]: Without dead ends: 31347 [2024-11-23 23:47:08,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 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 23:47:08,577 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 1848 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:08,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 867 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:47:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31347 states. [2024-11-23 23:47:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31347 to 30398. [2024-11-23 23:47:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30398 states, 22002 states have (on average 1.6101263521498046) internal successors, (35426), 23354 states have internal predecessors, (35426), 6950 states have call successors, (6950), 981 states have call predecessors, (6950), 1445 states have return successors, (12152), 7042 states have call predecessors, (12152), 6945 states have call successors, (12152) [2024-11-23 23:47:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30398 states to 30398 states and 54528 transitions. [2024-11-23 23:47:11,725 INFO L78 Accepts]: Start accepts. Automaton has 30398 states and 54528 transitions. Word has length 150 [2024-11-23 23:47:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:11,725 INFO L471 AbstractCegarLoop]: Abstraction has 30398 states and 54528 transitions. [2024-11-23 23:47:11,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 30398 states and 54528 transitions. [2024-11-23 23:47:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 23:47:11,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:11,734 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 23:47:11,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:47:11,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:47:11,938 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:11,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash -693906408, now seen corresponding path program 1 times [2024-11-23 23:47:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:11,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968434844] [2024-11-23 23:47:11,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:47:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968434844] [2024-11-23 23:47:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968434844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973009535] [2024-11-23 23:47:12,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:12,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:12,353 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:12,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:47:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:12,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:47:12,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:12,897 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 23:47:12,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:47:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973009535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:12,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:47:12,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:47:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645492622] [2024-11-23 23:47:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:12,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:47:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:12,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:47:12,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:47:12,899 INFO L87 Difference]: Start difference. First operand 30398 states and 54528 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:20,119 INFO L93 Difference]: Finished difference Result 102939 states and 201125 transitions. [2024-11-23 23:47:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:47:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2024-11-23 23:47:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:20,947 INFO L225 Difference]: With dead ends: 102939 [2024-11-23 23:47:20,947 INFO L226 Difference]: Without dead ends: 72576 [2024-11-23 23:47:21,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 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 23:47:21,188 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 1823 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:21,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 960 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:47:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72576 states. [2024-11-23 23:47:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72576 to 70965. [2024-11-23 23:47:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70965 states, 50125 states have (on average 1.5974463840399002) internal successors, (80072), 53483 states have internal predecessors, (80072), 17730 states have call successors, (17730), 1954 states have call predecessors, (17730), 3109 states have return successors, (36857), 18081 states have call predecessors, (36857), 17725 states have call successors, (36857) [2024-11-23 23:47:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70965 states to 70965 states and 134659 transitions. [2024-11-23 23:47:28,391 INFO L78 Accepts]: Start accepts. Automaton has 70965 states and 134659 transitions. Word has length 151 [2024-11-23 23:47:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:28,391 INFO L471 AbstractCegarLoop]: Abstraction has 70965 states and 134659 transitions. [2024-11-23 23:47:28,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:47:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 70965 states and 134659 transitions. [2024-11-23 23:47:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-23 23:47:28,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:28,407 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:28,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 23:47:28,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:47:28,608 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:28,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:28,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2010888559, now seen corresponding path program 1 times [2024-11-23 23:47:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383180661] [2024-11-23 23:47:28,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-23 23:47:29,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383180661] [2024-11-23 23:47:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383180661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913734057] [2024-11-23 23:47:29,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:29,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:29,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:29,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:29,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:47:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:29,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:47:29,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:47:29,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:47:29,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913734057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:29,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:47:29,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 23:47:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745862427] [2024-11-23 23:47:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:29,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:47:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:29,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:47:29,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:47:29,541 INFO L87 Difference]: Start difference. First operand 70965 states and 134659 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-23 23:47:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:36,854 INFO L93 Difference]: Finished difference Result 144764 states and 284592 transitions. [2024-11-23 23:47:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:47:36,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 206 [2024-11-23 23:47:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:37,614 INFO L225 Difference]: With dead ends: 144764 [2024-11-23 23:47:37,614 INFO L226 Difference]: Without dead ends: 73845 [2024-11-23 23:47:38,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 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 23:47:38,114 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 144 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:38,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2332 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:47:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73845 states. [2024-11-23 23:47:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73845 to 73461. [2024-11-23 23:47:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73461 states, 52557 states have (on average 1.6124208002739882) internal successors, (84744), 55915 states have internal predecessors, (84744), 17730 states have call successors, (17730), 2018 states have call predecessors, (17730), 3173 states have return successors, (36857), 18081 states have call predecessors, (36857), 17725 states have call successors, (36857) [2024-11-23 23:47:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73461 states to 73461 states and 139331 transitions. [2024-11-23 23:47:44,671 INFO L78 Accepts]: Start accepts. Automaton has 73461 states and 139331 transitions. Word has length 206 [2024-11-23 23:47:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:44,671 INFO L471 AbstractCegarLoop]: Abstraction has 73461 states and 139331 transitions. [2024-11-23 23:47:44,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-23 23:47:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 73461 states and 139331 transitions. [2024-11-23 23:47:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:47:44,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:44,691 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:44,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 23:47:44,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:44,891 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:44,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2098935107, now seen corresponding path program 1 times [2024-11-23 23:47:44,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:44,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631123575] [2024-11-23 23:47:44,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:44,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-23 23:47:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631123575] [2024-11-23 23:47:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631123575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849243626] [2024-11-23 23:47:45,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:45,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:45,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:45,399 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:45,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62aca35-cbf1-4a3b-b427-356b546b314b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 23:47:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:45,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 2402 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:47:45,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-23 23:47:46,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:47:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-23 23:47:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849243626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:47:47,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:47:47,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2024-11-23 23:47:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681341972] [2024-11-23 23:47:47,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:47:47,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:47:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:47,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:47:47,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:47:47,690 INFO L87 Difference]: Start difference. First operand 73461 states and 139331 transitions. Second operand has 25 states, 25 states have (on average 16.76) internal successors, (419), 23 states have internal predecessors, (419), 14 states have call successors, (92), 8 states have call predecessors, (92), 15 states have return successors, (94), 18 states have call predecessors, (94), 13 states have call successors, (94)