./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/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_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/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_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:58:47,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:58:47,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:58:47,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:58:47,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:58:47,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:58:47,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:58:47,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:58:47,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:58:47,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:58:47,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:58:47,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:58:47,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:58:47,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:58:47,588 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:58:47,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:58:47,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:58:47,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:58:47,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:58:47,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:58:47,590 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:58:47,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:58:47,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:58:47,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:58:47,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:58:47,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:58:47,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:58:47,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:58:47,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:58:47,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:58:47,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:58:47,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:58:47,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:58:47,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:58:47,593 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_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/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 -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2024-11-23 22:58:47,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:58:47,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:58:47,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:58:47,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:58:47,939 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:58:47,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-11-23 22:58:50,835 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/data/a0d901918/23a70e2004c64bd08da474e1dddb95ef/FLAGdd9ba89f6 [2024-11-23 22:58:51,275 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:58:51,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-11-23 22:58:51,295 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/data/a0d901918/23a70e2004c64bd08da474e1dddb95ef/FLAGdd9ba89f6 [2024-11-23 22:58:51,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/data/a0d901918/23a70e2004c64bd08da474e1dddb95ef [2024-11-23 22:58:51,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:58:51,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:58:51,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:58:51,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:58:51,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:58:51,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:51" (1/1) ... [2024-11-23 22:58:51,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd029c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:51, skipping insertion in model container [2024-11-23 22:58:51,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:51" (1/1) ... [2024-11-23 22:58:51,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:58:52,067 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_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-11-23 22:58:52,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:58:52,090 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:58:52,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [48] [2024-11-23 22:58:52,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [242] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1847] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2213] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2231] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2350] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2703] [2024-11-23 22:58:52,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3364] [2024-11-23 22:58:52,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2024-11-23 22:58:52,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3464] [2024-11-23 22:58:52,266 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-11-23 22:58:52,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:58:52,304 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:58:52,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52 WrapperNode [2024-11-23 22:58:52,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:58:52,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:58:52,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:58:52,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:58:52,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,395 INFO L138 Inliner]: procedures = 95, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1154 [2024-11-23 22:58:52,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:58:52,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:58:52,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:58:52,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:58:52,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,452 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 22:58:52,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:58:52,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:58:52,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:58:52,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:58:52,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (1/1) ... [2024-11-23 22:58:52,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:58:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:52,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:58:52,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:58:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:58:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-23 22:58:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-23 22:58:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 22:58:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 22:58:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 22:58:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 22:58:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 22:58:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-23 22:58:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 22:58:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 22:58:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 22:58:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-23 22:58:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-23 22:58:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 22:58:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:58:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 22:58:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 22:58:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 22:58:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 22:58:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 22:58:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:58:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:58:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 22:58:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 22:58:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-23 22:58:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-23 22:58:52,885 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:58:52,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:58:54,627 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-11-23 22:58:54,627 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:58:54,668 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:58:54,672 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:58:54,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:54 BoogieIcfgContainer [2024-11-23 22:58:54,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:58:54,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:58:54,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:58:54,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:58:54,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:58:51" (1/3) ... [2024-11-23 22:58:54,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:54, skipping insertion in model container [2024-11-23 22:58:54,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:52" (2/3) ... [2024-11-23 22:58:54,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:54, skipping insertion in model container [2024-11-23 22:58:54,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:54" (3/3) ... [2024-11-23 22:58:54,684 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2024-11-23 22:58:54,702 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:58:54,706 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product28.cil.c that has 29 procedures, 605 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:58:54,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:58:54,825 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;@5bce32f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:58:54,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:58:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 22:58:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 22:58:54,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:54,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:54,854 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:54,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash 835264426, now seen corresponding path program 1 times [2024-11-23 22:58:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091650061] [2024-11-23 22:58:54,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091650061] [2024-11-23 22:58:55,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091650061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:55,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:55,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:58:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836431089] [2024-11-23 22:58:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:55,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:55,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:55,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:55,840 INFO L87 Difference]: Start difference. First operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:56,213 INFO L93 Difference]: Finished difference Result 1207 states and 2004 transitions. [2024-11-23 22:58:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:58:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2024-11-23 22:58:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:56,245 INFO L225 Difference]: With dead ends: 1207 [2024-11-23 22:58:56,246 INFO L226 Difference]: Without dead ends: 610 [2024-11-23 22:58:56,255 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 22:58:56,258 INFO L435 NwaCegarLoop]: 981 mSDtfsCounter, 91 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5800 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:56,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5800 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-23 22:58:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2024-11-23 22:58:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 468 states have (on average 1.6602564102564104) internal successors, (777), 488 states have internal predecessors, (777), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-11-23 22:58:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 998 transitions. [2024-11-23 22:58:56,391 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 998 transitions. Word has length 67 [2024-11-23 22:58:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:56,393 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 998 transitions. [2024-11-23 22:58:56,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 998 transitions. [2024-11-23 22:58:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 22:58:56,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:56,402 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:56,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:58:56,403 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:56,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -351958820, now seen corresponding path program 1 times [2024-11-23 22:58:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091319188] [2024-11-23 22:58:56,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091319188] [2024-11-23 22:58:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091319188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593654818] [2024-11-23 22:58:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:56,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:56,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:56,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:56,711 INFO L87 Difference]: Start difference. First operand 608 states and 998 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:56,835 INFO L93 Difference]: Finished difference Result 1198 states and 1977 transitions. [2024-11-23 22:58:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:58:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-23 22:58:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:56,847 INFO L225 Difference]: With dead ends: 1198 [2024-11-23 22:58:56,847 INFO L226 Difference]: Without dead ends: 584 [2024-11-23 22:58:56,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:56,854 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 14 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:56,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2899 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-23 22:58:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-11-23 22:58:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 447 states have (on average 1.651006711409396) internal successors, (738), 465 states have internal predecessors, (738), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 955 transitions. [2024-11-23 22:58:56,917 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 955 transitions. Word has length 68 [2024-11-23 22:58:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:56,917 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 955 transitions. [2024-11-23 22:58:56,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 955 transitions. [2024-11-23 22:58:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 22:58:56,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:56,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:56,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:58:56,921 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:56,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash -229701840, now seen corresponding path program 1 times [2024-11-23 22:58:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:56,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714025187] [2024-11-23 22:58:56,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:57,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714025187] [2024-11-23 22:58:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714025187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:57,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:57,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:58:57,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914313291] [2024-11-23 22:58:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:57,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:57,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:57,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:57,350 INFO L87 Difference]: Start difference. First operand 584 states and 955 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:57,482 INFO L93 Difference]: Finished difference Result 1161 states and 1909 transitions. [2024-11-23 22:58:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:58:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-23 22:58:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:57,491 INFO L225 Difference]: With dead ends: 1161 [2024-11-23 22:58:57,491 INFO L226 Difference]: Without dead ends: 578 [2024-11-23 22:58:57,494 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 22:58:57,498 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 77 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:57,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5594 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-23 22:58:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-23 22:58:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 459 states have internal predecessors, (725), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 942 transitions. [2024-11-23 22:58:57,546 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 942 transitions. Word has length 68 [2024-11-23 22:58:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:57,548 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 942 transitions. [2024-11-23 22:58:57,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 942 transitions. [2024-11-23 22:58:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 22:58:57,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:57,550 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:57,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:58:57,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:57,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash 151788686, now seen corresponding path program 1 times [2024-11-23 22:58:57,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:57,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947918340] [2024-11-23 22:58:57,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:57,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:57,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947918340] [2024-11-23 22:58:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947918340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:58:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126479109] [2024-11-23 22:58:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:57,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:57,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:57,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:57,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:57,922 INFO L87 Difference]: Start difference. First operand 578 states and 942 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:58,057 INFO L93 Difference]: Finished difference Result 1149 states and 1883 transitions. [2024-11-23 22:58:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:58:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-11-23 22:58:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:58,067 INFO L225 Difference]: With dead ends: 1149 [2024-11-23 22:58:58,067 INFO L226 Difference]: Without dead ends: 572 [2024-11-23 22:58:58,070 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 22:58:58,072 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 63 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:58,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5534 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-23 22:58:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-23 22:58:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 435 states have (on average 1.6367816091954024) internal successors, (712), 453 states have internal predecessors, (712), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 929 transitions. [2024-11-23 22:58:58,116 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 929 transitions. Word has length 69 [2024-11-23 22:58:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:58,116 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 929 transitions. [2024-11-23 22:58:58,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 929 transitions. [2024-11-23 22:58:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 22:58:58,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:58,119 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:58,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:58:58,119 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:58,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1871200492, now seen corresponding path program 1 times [2024-11-23 22:58:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:58,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280582066] [2024-11-23 22:58:58,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:58,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280582066] [2024-11-23 22:58:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280582066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:58:58,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097331367] [2024-11-23 22:58:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:58,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:58,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:58,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:58,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:58,445 INFO L87 Difference]: Start difference. First operand 572 states and 929 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:58,574 INFO L93 Difference]: Finished difference Result 1137 states and 1857 transitions. [2024-11-23 22:58:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:58:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-23 22:58:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:58,581 INFO L225 Difference]: With dead ends: 1137 [2024-11-23 22:58:58,581 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:58:58,585 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 22:58:58,587 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 49 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:58,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5474 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:58:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:58:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 447 states have internal predecessors, (699), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2024-11-23 22:58:58,622 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 70 [2024-11-23 22:58:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:58,622 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2024-11-23 22:58:58,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2024-11-23 22:58:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 22:58:58,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:58,624 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:58,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:58:58,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:58,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash -976310699, now seen corresponding path program 1 times [2024-11-23 22:58:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:58,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619426306] [2024-11-23 22:58:58,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:58,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:58,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:58,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619426306] [2024-11-23 22:58:58,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619426306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:58,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:58,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:58:58,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896283829] [2024-11-23 22:58:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:58,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:58:58,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:58,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:58:58,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:58:58,873 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:58,974 INFO L93 Difference]: Finished difference Result 1125 states and 1831 transitions. [2024-11-23 22:58:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:58:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-23 22:58:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:58,981 INFO L225 Difference]: With dead ends: 1125 [2024-11-23 22:58:58,981 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:58:58,984 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 22:58:58,986 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 24 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:58,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5426 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:58:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:58:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.627039627039627) internal successors, (698), 447 states have internal predecessors, (698), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2024-11-23 22:58:59,023 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 70 [2024-11-23 22:58:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:59,024 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2024-11-23 22:58:59,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:58:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2024-11-23 22:58:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 22:58:59,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:59,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:59,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:58:59,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:59,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1123649166, now seen corresponding path program 1 times [2024-11-23 22:58:59,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:59,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697391417] [2024-11-23 22:58:59,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:59,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697391417] [2024-11-23 22:58:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697391417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:59,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128627582] [2024-11-23 22:58:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:59,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:59,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:59,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:59,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:59,208 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:59,290 INFO L93 Difference]: Finished difference Result 1116 states and 1816 transitions. [2024-11-23 22:58:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-23 22:58:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:59,297 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 22:58:59,297 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:58:59,300 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 22:58:59,301 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 15 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:59,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2685 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:58:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:58:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6247086247086246) internal successors, (697), 447 states have internal predecessors, (697), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 914 transitions. [2024-11-23 22:58:59,337 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 914 transitions. Word has length 71 [2024-11-23 22:58:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:59,337 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 914 transitions. [2024-11-23 22:58:59,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 914 transitions. [2024-11-23 22:58:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 22:58:59,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:59,339 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:59,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:58:59,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:59,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash -713829452, now seen corresponding path program 1 times [2024-11-23 22:58:59,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:59,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262483189] [2024-11-23 22:58:59,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:59,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:59,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262483189] [2024-11-23 22:58:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262483189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:59,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:59,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:59,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023535622] [2024-11-23 22:58:59,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:59,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:59,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:59,473 INFO L87 Difference]: Start difference. First operand 566 states and 914 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:59,541 INFO L93 Difference]: Finished difference Result 1116 states and 1814 transitions. [2024-11-23 22:58:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:59,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-23 22:58:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:59,549 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 22:58:59,549 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:58:59,552 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 22:58:59,553 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 14 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:59,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2687 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:58:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:58:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6223776223776223) internal successors, (696), 447 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 913 transitions. [2024-11-23 22:58:59,592 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 913 transitions. Word has length 72 [2024-11-23 22:58:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:59,592 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 913 transitions. [2024-11-23 22:58:59,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 913 transitions. [2024-11-23 22:58:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 22:58:59,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:59,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:59,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:58:59,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:59,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1212770825, now seen corresponding path program 1 times [2024-11-23 22:58:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:59,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364815817] [2024-11-23 22:58:59,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:58:59,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:59,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364815817] [2024-11-23 22:58:59,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364815817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:59,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:58:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601193305] [2024-11-23 22:58:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:59,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:58:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:59,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:58:59,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:58:59,731 INFO L87 Difference]: Start difference. First operand 566 states and 913 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:59,804 INFO L93 Difference]: Finished difference Result 1116 states and 1812 transitions. [2024-11-23 22:58:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:58:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-23 22:58:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:59,811 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 22:58:59,812 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:58:59,815 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 22:58:59,816 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 13 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2689 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 22:58:59,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:58:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:58:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 447 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:58:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 912 transitions. [2024-11-23 22:58:59,846 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 912 transitions. Word has length 73 [2024-11-23 22:58:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:59,847 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 912 transitions. [2024-11-23 22:58:59,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:58:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 912 transitions. [2024-11-23 22:58:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-23 22:58:59,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:59,848 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:59,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:58:59,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:59,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash 181465177, now seen corresponding path program 1 times [2024-11-23 22:58:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:59,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364648085] [2024-11-23 22:58:59,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:59:00,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364648085] [2024-11-23 22:59:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364648085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:00,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:00,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:59:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965904754] [2024-11-23 22:59:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:00,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:00,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:00,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:00,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:00,012 INFO L87 Difference]: Start difference. First operand 566 states and 912 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:59:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:00,098 INFO L93 Difference]: Finished difference Result 1116 states and 1810 transitions. [2024-11-23 22:59:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:59:00,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-23 22:59:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:00,107 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 22:59:00,108 INFO L226 Difference]: Without dead ends: 566 [2024-11-23 22:59:00,112 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 22:59:00,113 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 12 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:00,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2691 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-23 22:59:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-23 22:59:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6177156177156178) internal successors, (694), 447 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 22:59:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 911 transitions. [2024-11-23 22:59:00,155 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 911 transitions. Word has length 74 [2024-11-23 22:59:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:00,155 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 911 transitions. [2024-11-23 22:59:00,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 22:59:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 911 transitions. [2024-11-23 22:59:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 22:59:00,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:00,158 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:00,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:59:00,159 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:00,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:00,159 INFO L85 PathProgramCache]: Analyzing trace with hash 134657660, now seen corresponding path program 1 times [2024-11-23 22:59:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203979793] [2024-11-23 22:59:00,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:00,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:59:00,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:00,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203979793] [2024-11-23 22:59:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203979793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:00,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:59:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821789640] [2024-11-23 22:59:00,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:00,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:59:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:00,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:59:00,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:00,441 INFO L87 Difference]: Start difference. First operand 566 states and 911 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-23 22:59:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:01,471 INFO L93 Difference]: Finished difference Result 1607 states and 2616 transitions. [2024-11-23 22:59:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:01,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-23 22:59:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:01,482 INFO L225 Difference]: With dead ends: 1607 [2024-11-23 22:59:01,482 INFO L226 Difference]: Without dead ends: 1059 [2024-11-23 22:59:01,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:01,487 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 774 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:01,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 4281 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:59:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-23 22:59:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1051. [2024-11-23 22:59:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 799 states have (on average 1.5832290362953692) internal successors, (1265), 833 states have internal predecessors, (1265), 202 states have call successors, (202), 53 states have call predecessors, (202), 49 states have return successors, (205), 191 states have call predecessors, (205), 198 states have call successors, (205) [2024-11-23 22:59:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1672 transitions. [2024-11-23 22:59:01,548 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1672 transitions. Word has length 75 [2024-11-23 22:59:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:01,549 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1672 transitions. [2024-11-23 22:59:01,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-23 22:59:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1672 transitions. [2024-11-23 22:59:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 22:59:01,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:01,550 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:01,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:59:01,550 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:01,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1527552892, now seen corresponding path program 1 times [2024-11-23 22:59:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684395084] [2024-11-23 22:59:01,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:59:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684395084] [2024-11-23 22:59:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684395084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317925772] [2024-11-23 22:59:01,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:01,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:01,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:01,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:59:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:02,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:59:02,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:59:02,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317925772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-23 22:59:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767732382] [2024-11-23 22:59:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:02,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:02,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:02,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:02,294 INFO L87 Difference]: Start difference. First operand 1051 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:59:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:02,437 INFO L93 Difference]: Finished difference Result 3031 states and 4888 transitions. [2024-11-23 22:59:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-23 22:59:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:02,460 INFO L225 Difference]: With dead ends: 3031 [2024-11-23 22:59:02,461 INFO L226 Difference]: Without dead ends: 1998 [2024-11-23 22:59:02,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:02,469 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 874 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:02,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2406 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2024-11-23 22:59:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1937. [2024-11-23 22:59:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1480 states have (on average 1.6006756756756757) internal successors, (2369), 1548 states have internal predecessors, (2369), 363 states have call successors, (363), 96 states have call predecessors, (363), 93 states have return successors, (382), 346 states have call predecessors, (382), 359 states have call successors, (382) [2024-11-23 22:59:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3114 transitions. [2024-11-23 22:59:02,610 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3114 transitions. Word has length 75 [2024-11-23 22:59:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:02,612 INFO L471 AbstractCegarLoop]: Abstraction has 1937 states and 3114 transitions. [2024-11-23 22:59:02,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:59:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3114 transitions. [2024-11-23 22:59:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 22:59:02,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:02,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:02,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:59:02,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:02,819 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:02,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1092140101, now seen corresponding path program 1 times [2024-11-23 22:59:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:02,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885654395] [2024-11-23 22:59:02,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:02,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:59:03,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885654395] [2024-11-23 22:59:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885654395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843002801] [2024-11-23 22:59:03,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:03,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:03,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:03,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:59:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:03,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:59:03,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:59:03,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843002801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:03,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-23 22:59:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46713133] [2024-11-23 22:59:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:03,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:03,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:03,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:03,533 INFO L87 Difference]: Start difference. First operand 1937 states and 3114 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:59:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:03,730 INFO L93 Difference]: Finished difference Result 4347 states and 7025 transitions. [2024-11-23 22:59:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-23 22:59:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:03,760 INFO L225 Difference]: With dead ends: 4347 [2024-11-23 22:59:03,760 INFO L226 Difference]: Without dead ends: 2428 [2024-11-23 22:59:03,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:03,777 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 872 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:03,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1711 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2024-11-23 22:59:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2381. [2024-11-23 22:59:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1822 states have (on average 1.6125137211855105) internal successors, (2938), 1907 states have internal predecessors, (2938), 444 states have call successors, (444), 116 states have call predecessors, (444), 114 states have return successors, (467), 425 states have call predecessors, (467), 440 states have call successors, (467) [2024-11-23 22:59:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3849 transitions. [2024-11-23 22:59:03,994 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3849 transitions. Word has length 76 [2024-11-23 22:59:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:03,995 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3849 transitions. [2024-11-23 22:59:03,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 22:59:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3849 transitions. [2024-11-23 22:59:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-23 22:59:04,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:04,000 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:04,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:04,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:04,201 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:04,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1658445235, now seen corresponding path program 1 times [2024-11-23 22:59:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137564193] [2024-11-23 22:59:04,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:59:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137564193] [2024-11-23 22:59:04,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137564193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:04,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:59:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290661465] [2024-11-23 22:59:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:04,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:59:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:04,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:59:04,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:04,448 INFO L87 Difference]: Start difference. First operand 2381 states and 3849 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 22:59:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:05,385 INFO L93 Difference]: Finished difference Result 7059 states and 11641 transitions. [2024-11-23 22:59:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-11-23 22:59:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:05,436 INFO L225 Difference]: With dead ends: 7059 [2024-11-23 22:59:05,437 INFO L226 Difference]: Without dead ends: 4696 [2024-11-23 22:59:05,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:05,455 INFO L435 NwaCegarLoop]: 1014 mSDtfsCounter, 907 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:05,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4669 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:05,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2024-11-23 22:59:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4643. [2024-11-23 22:59:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3559 states have (on average 1.6119696543973026) internal successors, (5737), 3724 states have internal predecessors, (5737), 858 states have call successors, (858), 226 states have call predecessors, (858), 225 states have return successors, (1058), 828 states have call predecessors, (1058), 852 states have call successors, (1058) [2024-11-23 22:59:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 7653 transitions. [2024-11-23 22:59:05,841 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 7653 transitions. Word has length 78 [2024-11-23 22:59:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:05,841 INFO L471 AbstractCegarLoop]: Abstraction has 4643 states and 7653 transitions. [2024-11-23 22:59:05,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 22:59:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 7653 transitions. [2024-11-23 22:59:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-23 22:59:05,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:05,843 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:05,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:59:05,843 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:05,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1235674296, now seen corresponding path program 1 times [2024-11-23 22:59:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:05,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538073153] [2024-11-23 22:59:05,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:05,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:59:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538073153] [2024-11-23 22:59:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538073153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:59:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686460343] [2024-11-23 22:59:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:05,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:05,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:05,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:05,957 INFO L87 Difference]: Start difference. First operand 4643 states and 7653 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 22:59:06,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:06,354 INFO L93 Difference]: Finished difference Result 9292 states and 15439 transitions. [2024-11-23 22:59:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:59:06,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2024-11-23 22:59:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:06,403 INFO L225 Difference]: With dead ends: 9292 [2024-11-23 22:59:06,404 INFO L226 Difference]: Without dead ends: 4667 [2024-11-23 22:59:06,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:59:06,436 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 12 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:06,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2657 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2024-11-23 22:59:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4651. [2024-11-23 22:59:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4651 states, 3565 states have (on average 1.6103786816269285) internal successors, (5741), 3730 states have internal predecessors, (5741), 858 states have call successors, (858), 230 states have call predecessors, (858), 227 states have return successors, (1046), 826 states have call predecessors, (1046), 852 states have call successors, (1046) [2024-11-23 22:59:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7645 transitions. [2024-11-23 22:59:06,848 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7645 transitions. Word has length 79 [2024-11-23 22:59:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:06,849 INFO L471 AbstractCegarLoop]: Abstraction has 4651 states and 7645 transitions. [2024-11-23 22:59:06,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 22:59:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7645 transitions. [2024-11-23 22:59:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-23 22:59:06,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:06,851 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:06,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:59:06,851 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:06,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash 628789887, now seen corresponding path program 1 times [2024-11-23 22:59:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:06,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706585579] [2024-11-23 22:59:06,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:06,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 22:59:07,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:07,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706585579] [2024-11-23 22:59:07,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706585579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:07,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:07,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:59:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792002277] [2024-11-23 22:59:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:07,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:59:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:07,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:59:07,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:07,115 INFO L87 Difference]: Start difference. First operand 4651 states and 7645 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 22:59:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:08,352 INFO L93 Difference]: Finished difference Result 13913 states and 23485 transitions. [2024-11-23 22:59:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:08,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-11-23 22:59:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:08,470 INFO L225 Difference]: With dead ends: 13913 [2024-11-23 22:59:08,470 INFO L226 Difference]: Without dead ends: 9280 [2024-11-23 22:59:08,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:08,499 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 901 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:08,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4542 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2024-11-23 22:59:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 9211. [2024-11-23 22:59:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9211 states, 7066 states have (on average 1.6085479762241721) internal successors, (11366), 7391 states have internal predecessors, (11366), 1691 states have call successors, (1691), 454 states have call predecessors, (1691), 453 states have return successors, (2467), 1637 states have call predecessors, (2467), 1681 states have call successors, (2467) [2024-11-23 22:59:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 15524 transitions. [2024-11-23 22:59:09,251 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 15524 transitions. Word has length 87 [2024-11-23 22:59:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:09,252 INFO L471 AbstractCegarLoop]: Abstraction has 9211 states and 15524 transitions. [2024-11-23 22:59:09,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 22:59:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 15524 transitions. [2024-11-23 22:59:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 22:59:09,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:09,255 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:09,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:59:09,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:09,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash 136436638, now seen corresponding path program 1 times [2024-11-23 22:59:09,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:09,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706805314] [2024-11-23 22:59:09,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:59:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:09,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706805314] [2024-11-23 22:59:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706805314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:59:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212264294] [2024-11-23 22:59:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:09,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:09,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:09,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:09,371 INFO L87 Difference]: Start difference. First operand 9211 states and 15524 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 22:59:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:10,022 INFO L93 Difference]: Finished difference Result 18476 states and 31513 transitions. [2024-11-23 22:59:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:59:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-23 22:59:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:10,135 INFO L225 Difference]: With dead ends: 18476 [2024-11-23 22:59:10,135 INFO L226 Difference]: Without dead ends: 9283 [2024-11-23 22:59:10,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:59:10,200 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 12 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:10,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2651 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2024-11-23 22:59:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 9251. [2024-11-23 22:59:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9251 states, 7102 states have (on average 1.6060264714165025) internal successors, (11406), 7419 states have internal predecessors, (11406), 1691 states have call successors, (1691), 470 states have call predecessors, (1691), 457 states have return successors, (2449), 1633 states have call predecessors, (2449), 1681 states have call successors, (2449) [2024-11-23 22:59:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 15546 transitions. [2024-11-23 22:59:10,943 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 15546 transitions. Word has length 88 [2024-11-23 22:59:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:10,945 INFO L471 AbstractCegarLoop]: Abstraction has 9251 states and 15546 transitions. [2024-11-23 22:59:10,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 22:59:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 15546 transitions. [2024-11-23 22:59:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 22:59:10,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:10,948 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:10,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:59:10,948 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:10,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1743002170, now seen corresponding path program 1 times [2024-11-23 22:59:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468549158] [2024-11-23 22:59:10,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:10,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 22:59:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468549158] [2024-11-23 22:59:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468549158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:11,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:59:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638995146] [2024-11-23 22:59:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:11,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:59:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:11,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:59:11,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:11,213 INFO L87 Difference]: Start difference. First operand 9251 states and 15546 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 22:59:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:12,745 INFO L93 Difference]: Finished difference Result 27781 states and 48585 transitions. [2024-11-23 22:59:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:12,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-11-23 22:59:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:12,930 INFO L225 Difference]: With dead ends: 27781 [2024-11-23 22:59:12,930 INFO L226 Difference]: Without dead ends: 18548 [2024-11-23 22:59:12,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:12,989 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 895 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:12,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4698 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18548 states. [2024-11-23 22:59:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18548 to 18447. [2024-11-23 22:59:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 14167 states have (on average 1.6035152114067903) internal successors, (22717), 14796 states have internal predecessors, (22717), 3362 states have call successors, (3362), 934 states have call predecessors, (3362), 917 states have return successors, (6132), 3260 states have call predecessors, (6132), 3344 states have call successors, (6132) [2024-11-23 22:59:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 32211 transitions. [2024-11-23 22:59:14,201 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 32211 transitions. Word has length 97 [2024-11-23 22:59:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:14,202 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 32211 transitions. [2024-11-23 22:59:14,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 22:59:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 32211 transitions. [2024-11-23 22:59:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 22:59:14,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:14,204 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:14,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:59:14,205 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:14,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1187374209, now seen corresponding path program 1 times [2024-11-23 22:59:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017231944] [2024-11-23 22:59:14,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 22:59:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017231944] [2024-11-23 22:59:14,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017231944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:14,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:59:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809575692] [2024-11-23 22:59:14,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:14,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:14,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:14,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:14,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:14,338 INFO L87 Difference]: Start difference. First operand 18447 states and 32211 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), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 22:59:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:15,792 INFO L93 Difference]: Finished difference Result 37020 states and 65963 transitions. [2024-11-23 22:59:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:59:15,793 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), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-11-23 22:59:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:16,037 INFO L225 Difference]: With dead ends: 37020 [2024-11-23 22:59:16,037 INFO L226 Difference]: Without dead ends: 18591 [2024-11-23 22:59:16,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:59:16,234 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 11 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:16,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2651 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18591 states. [2024-11-23 22:59:17,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18591 to 18527. [2024-11-23 22:59:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18527 states, 14239 states have (on average 1.6010253529039962) internal successors, (22797), 14868 states have internal predecessors, (22797), 3362 states have call successors, (3362), 950 states have call predecessors, (3362), 925 states have return successors, (6108), 3252 states have call predecessors, (6108), 3344 states have call successors, (6108) [2024-11-23 22:59:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18527 states to 18527 states and 32267 transitions. [2024-11-23 22:59:17,544 INFO L78 Accepts]: Start accepts. Automaton has 18527 states and 32267 transitions. Word has length 98 [2024-11-23 22:59:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:17,544 INFO L471 AbstractCegarLoop]: Abstraction has 18527 states and 32267 transitions. [2024-11-23 22:59:17,544 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), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 22:59:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18527 states and 32267 transitions. [2024-11-23 22:59:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:59:17,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:17,547 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:17,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:59:17,548 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:17,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash -690960538, now seen corresponding path program 1 times [2024-11-23 22:59:17,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:17,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799720472] [2024-11-23 22:59:17,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 22:59:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799720472] [2024-11-23 22:59:17,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799720472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:17,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:17,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:59:17,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329483662] [2024-11-23 22:59:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:17,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:59:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:17,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:59:17,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:59:17,757 INFO L87 Difference]: Start difference. First operand 18527 states and 32267 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:59:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:20,235 INFO L93 Difference]: Finished difference Result 55725 states and 103445 transitions. [2024-11-23 22:59:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-23 22:59:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:20,681 INFO L225 Difference]: With dead ends: 55725 [2024-11-23 22:59:20,681 INFO L226 Difference]: Without dead ends: 37216 [2024-11-23 22:59:20,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:20,852 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 892 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:20,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 4523 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:59:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37216 states. [2024-11-23 22:59:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37216 to 37051. [2024-11-23 22:59:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37051 states, 28480 states have (on average 1.5981741573033708) internal successors, (45516), 29733 states have internal predecessors, (45516), 6709 states have call successors, (6709), 1894 states have call predecessors, (6709), 1861 states have return successors, (16579), 6511 states have call predecessors, (16579), 6675 states have call successors, (16579) [2024-11-23 22:59:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37051 states to 37051 states and 68804 transitions. [2024-11-23 22:59:23,916 INFO L78 Accepts]: Start accepts. Automaton has 37051 states and 68804 transitions. Word has length 108 [2024-11-23 22:59:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:23,918 INFO L471 AbstractCegarLoop]: Abstraction has 37051 states and 68804 transitions. [2024-11-23 22:59:23,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:59:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 37051 states and 68804 transitions. [2024-11-23 22:59:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:59:23,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:23,922 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:23,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:59:23,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:23,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash 548444199, now seen corresponding path program 1 times [2024-11-23 22:59:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735163424] [2024-11-23 22:59:23,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 22:59:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735163424] [2024-11-23 22:59:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735163424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:59:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226717263] [2024-11-23 22:59:24,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:24,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:24,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:24,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:24,044 INFO L87 Difference]: Start difference. First operand 37051 states and 68804 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:26,380 INFO L93 Difference]: Finished difference Result 74327 states and 142867 transitions. [2024-11-23 22:59:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:59:26,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-23 22:59:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:26,918 INFO L225 Difference]: With dead ends: 74327 [2024-11-23 22:59:26,918 INFO L226 Difference]: Without dead ends: 37246 [2024-11-23 22:59:27,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:59:27,642 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 10 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:27,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2651 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37246 states. [2024-11-23 22:59:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37246 to 37120. [2024-11-23 22:59:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37120 states, 28546 states have (on average 1.5951446787641002) internal successors, (45535), 29810 states have internal predecessors, (45535), 6698 states have call successors, (6698), 1907 states have call predecessors, (6698), 1875 states have return successors, (16427), 6488 states have call predecessors, (16427), 6664 states have call successors, (16427) [2024-11-23 22:59:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37120 states to 37120 states and 68660 transitions. [2024-11-23 22:59:30,375 INFO L78 Accepts]: Start accepts. Automaton has 37120 states and 68660 transitions. Word has length 109 [2024-11-23 22:59:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:30,376 INFO L471 AbstractCegarLoop]: Abstraction has 37120 states and 68660 transitions. [2024-11-23 22:59:30,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 37120 states and 68660 transitions. [2024-11-23 22:59:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-23 22:59:30,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:30,389 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:30,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:59:30,390 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:30,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2055669926, now seen corresponding path program 1 times [2024-11-23 22:59:30,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:30,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834032779] [2024-11-23 22:59:30,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:59:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834032779] [2024-11-23 22:59:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834032779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035157528] [2024-11-23 22:59:30,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:30,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:30,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:59:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:31,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:59:31,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 22:59:31,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:31,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035157528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:31,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:31,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-23 22:59:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44317834] [2024-11-23 22:59:31,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:31,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:31,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:31,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:31,464 INFO L87 Difference]: Start difference. First operand 37120 states and 68660 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:59:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:34,148 INFO L93 Difference]: Finished difference Result 82806 states and 160114 transitions. [2024-11-23 22:59:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:34,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2024-11-23 22:59:34,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:35,035 INFO L225 Difference]: With dead ends: 82806 [2024-11-23 22:59:35,036 INFO L226 Difference]: Without dead ends: 59891 [2024-11-23 22:59:35,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:59:35,359 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 900 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:35,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1838 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:59:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59891 states. [2024-11-23 22:59:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59891 to 59647. [2024-11-23 22:59:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59647 states, 45987 states have (on average 1.608302346315263) internal successors, (73961), 47957 states have internal predecessors, (73961), 10632 states have call successors, (10632), 3011 states have call predecessors, (10632), 3027 states have return successors, (29031), 10436 states have call predecessors, (29031), 10582 states have call successors, (29031) [2024-11-23 22:59:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59647 states to 59647 states and 113624 transitions. [2024-11-23 22:59:38,695 INFO L78 Accepts]: Start accepts. Automaton has 59647 states and 113624 transitions. Word has length 162 [2024-11-23 22:59:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:38,696 INFO L471 AbstractCegarLoop]: Abstraction has 59647 states and 113624 transitions. [2024-11-23 22:59:38,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:59:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 59647 states and 113624 transitions. [2024-11-23 22:59:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 22:59:38,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:38,708 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:38,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:59:38,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 22:59:38,909 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:38,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1208799109, now seen corresponding path program 1 times [2024-11-23 22:59:38,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:38,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929176092] [2024-11-23 22:59:38,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:38,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-23 22:59:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929176092] [2024-11-23 22:59:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929176092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533403695] [2024-11-23 22:59:39,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:39,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:39,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca2f22ee-2eb1-4542-9d0a-e6a4287eead7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:59:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:40,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:59:40,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 22:59:40,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533403695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:40,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:40,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-23 22:59:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540534041] [2024-11-23 22:59:40,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:40,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:59:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:40,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:59:40,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:59:40,326 INFO L87 Difference]: Start difference. First operand 59647 states and 113624 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-23 22:59:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:51,211 INFO L93 Difference]: Finished difference Result 168665 states and 337005 transitions. [2024-11-23 22:59:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:59:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 190 [2024-11-23 22:59:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:52,509 INFO L225 Difference]: With dead ends: 168665 [2024-11-23 22:59:52,509 INFO L226 Difference]: Without dead ends: 109036 [2024-11-23 22:59:52,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:59:52,964 INFO L435 NwaCegarLoop]: 620 mSDtfsCounter, 3060 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 7447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:52,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3242 Valid, 2447 Invalid, 7447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [680 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-23 22:59:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109036 states.