./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.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_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/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_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/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_88449edf-db1b-41f9-a611-cd992c60a280/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 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:45:38,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:45:38,664 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:45:38,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:45:38,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:45:38,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:45:38,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:45:38,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:45:38,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:45:38,724 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:45:38,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:45:38,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:45:38,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:45:38,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:45:38,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:45:38,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:45:38,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:45:38,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:45:38,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:45:38,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:45:38,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:45:38,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:45:38,730 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:45:38,731 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:45:38,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:45:38,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:45:38,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:45:38,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:38,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:45:38,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:45:38,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:45:38,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:45:38,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:38,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:45:38,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:45:38,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:45:38,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:45:38,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:45:38,735 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_88449edf-db1b-41f9-a611-cd992c60a280/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 -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2024-11-23 23:45:39,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:45:39,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:45:39,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:45:39,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:45:39,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:45:39,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2024-11-23 23:45:42,504 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/data/8ac05a2c9/bbd2cb93299d4664a79d7ff755e6d930/FLAG035bd65d5 [2024-11-23 23:45:42,524 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-23 23:45:43,043 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:45:43,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2024-11-23 23:45:43,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/data/8ac05a2c9/bbd2cb93299d4664a79d7ff755e6d930/FLAG035bd65d5 [2024-11-23 23:45:43,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/data/8ac05a2c9/bbd2cb93299d4664a79d7ff755e6d930 [2024-11-23 23:45:43,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:45:43,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:45:43,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:43,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:45:43,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:45:43,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:43" (1/1) ... [2024-11-23 23:45:43,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97c373c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:43, skipping insertion in model container [2024-11-23 23:45:43,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:43" (1/1) ... [2024-11-23 23:45:43,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:45:43,396 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_88449edf-db1b-41f9-a611-cd992c60a280/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-23 23:45:43,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:43,990 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:45:44,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-23 23:45:44,001 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [57] [2024-11-23 23:45:44,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [95] [2024-11-23 23:45:44,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2024-11-23 23:45:44,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [653] [2024-11-23 23:45:44,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [752] [2024-11-23 23:45:44,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [770] [2024-11-23 23:45:44,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1437] [2024-11-23 23:45:44,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1557] [2024-11-23 23:45:44,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3170] [2024-11-23 23:45:44,012 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_88449edf-db1b-41f9-a611-cd992c60a280/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-23 23:45:44,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:44,231 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:45:44,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44 WrapperNode [2024-11-23 23:45:44,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:44,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:44,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:45:44,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:45:44,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,335 INFO L138 Inliner]: procedures = 95, calls = 355, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 987 [2024-11-23 23:45:44,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:44,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:45:44,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:45:44,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:45:44,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,390 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 23:45:44,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:45:44,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:45:44,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:45:44,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:45:44,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (1/1) ... [2024-11-23 23:45:44,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:44,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:45:44,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:45:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:45:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-23 23:45:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-23 23:45:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-23 23:45:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-23 23:45:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 23:45:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 23:45:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 23:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 23:45:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 23:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 23:45:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 23:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 23:45:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-23 23:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-23 23:45:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 23:45:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 23:45:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 23:45:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 23:45:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 23:45:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 23:45:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 23:45:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 23:45:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:45:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 23:45:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 23:45:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 23:45:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 23:45:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 23:45:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 23:45:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 23:45:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:45:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:45:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 23:45:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 23:45:44,924 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:45:44,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:45:46,833 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2024-11-23 23:45:46,833 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:45:46,889 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:45:46,893 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:45:46,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:46 BoogieIcfgContainer [2024-11-23 23:45:46,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:45:46,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:45:46,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:45:46,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:45:46,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:43" (1/3) ... [2024-11-23 23:45:46,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb75e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:46, skipping insertion in model container [2024-11-23 23:45:46,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:44" (2/3) ... [2024-11-23 23:45:46,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb75e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:46, skipping insertion in model container [2024-11-23 23:45:46,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:46" (3/3) ... [2024-11-23 23:45:46,907 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2024-11-23 23:45:46,926 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:45:46,930 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product31.cil.c that has 29 procedures, 620 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:45:47,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:45:47,056 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;@4031e641, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:45:47,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:45:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 477 states have (on average 1.6645702306079664) internal successors, (794), 495 states have internal predecessors, (794), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-23 23:45:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 23:45:47,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:47,095 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:47,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:47,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:47,103 INFO L85 PathProgramCache]: Analyzing trace with hash -973088103, now seen corresponding path program 1 times [2024-11-23 23:45:47,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:47,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430321769] [2024-11-23 23:45:47,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:47,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:48,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430321769] [2024-11-23 23:45:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430321769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:48,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:48,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147000960] [2024-11-23 23:45:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:48,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:48,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:48,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:48,528 INFO L87 Difference]: Start difference. First operand has 620 states, 477 states have (on average 1.6645702306079664) internal successors, (794), 495 states have internal predecessors, (794), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:48,999 INFO L93 Difference]: Finished difference Result 1237 states and 2052 transitions. [2024-11-23 23:45:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2024-11-23 23:45:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:49,033 INFO L225 Difference]: With dead ends: 1237 [2024-11-23 23:45:49,033 INFO L226 Difference]: Without dead ends: 625 [2024-11-23 23:45:49,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:49,050 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 91 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5933 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 23:45:49,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5933 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:45:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-23 23:45:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 623. [2024-11-23 23:45:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 480 states have (on average 1.65625) internal successors, (795), 498 states have internal predecessors, (795), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-11-23 23:45:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1022 transitions. [2024-11-23 23:45:49,217 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1022 transitions. Word has length 115 [2024-11-23 23:45:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:49,218 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1022 transitions. [2024-11-23 23:45:49,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1022 transitions. [2024-11-23 23:45:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:45:49,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:49,295 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:49,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:45:49,295 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:49,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:49,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1177356974, now seen corresponding path program 1 times [2024-11-23 23:45:49,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:49,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812148748] [2024-11-23 23:45:49,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:49,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:49,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:49,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812148748] [2024-11-23 23:45:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812148748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:49,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:49,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:49,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821691608] [2024-11-23 23:45:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:49,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:49,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:49,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:49,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:49,877 INFO L87 Difference]: Start difference. First operand 623 states and 1022 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:50,131 INFO L93 Difference]: Finished difference Result 1241 states and 2047 transitions. [2024-11-23 23:45:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2024-11-23 23:45:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:50,142 INFO L225 Difference]: With dead ends: 1241 [2024-11-23 23:45:50,143 INFO L226 Difference]: Without dead ends: 634 [2024-11-23 23:45:50,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:50,149 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 90 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5928 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:50,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5928 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:45:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-23 23:45:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 623. [2024-11-23 23:45:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 480 states have (on average 1.65625) internal successors, (795), 498 states have internal predecessors, (795), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-11-23 23:45:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1022 transitions. [2024-11-23 23:45:50,231 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1022 transitions. Word has length 116 [2024-11-23 23:45:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:50,233 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1022 transitions. [2024-11-23 23:45:50,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1022 transitions. [2024-11-23 23:45:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:45:50,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:50,246 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:50,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:45:50,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:50,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1569441686, now seen corresponding path program 1 times [2024-11-23 23:45:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002904474] [2024-11-23 23:45:50,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:50,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002904474] [2024-11-23 23:45:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002904474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846946861] [2024-11-23 23:45:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:50,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:50,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:50,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:50,505 INFO L87 Difference]: Start difference. First operand 623 states and 1022 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:50,645 INFO L93 Difference]: Finished difference Result 1228 states and 2025 transitions. [2024-11-23 23:45:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:45:50,646 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-23 23:45:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:50,655 INFO L225 Difference]: With dead ends: 1228 [2024-11-23 23:45:50,655 INFO L226 Difference]: Without dead ends: 593 [2024-11-23 23:45:50,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:45:50,660 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 14 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2971 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 23:45:50,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2971 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-23 23:45:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-23 23:45:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 453 states have (on average 1.640176600441501) internal successors, (743), 469 states have internal predecessors, (743), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 966 transitions. [2024-11-23 23:45:50,717 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 966 transitions. Word has length 116 [2024-11-23 23:45:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:50,717 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 966 transitions. [2024-11-23 23:45:50,718 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 966 transitions. [2024-11-23 23:45:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-23 23:45:50,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:50,726 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:50,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:45:50,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:50,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 91940317, now seen corresponding path program 1 times [2024-11-23 23:45:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99248975] [2024-11-23 23:45:50,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:51,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99248975] [2024-11-23 23:45:51,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99248975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:51,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:51,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674714840] [2024-11-23 23:45:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:51,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:51,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:51,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:51,148 INFO L87 Difference]: Start difference. First operand 593 states and 966 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:51,280 INFO L93 Difference]: Finished difference Result 1179 states and 1931 transitions. [2024-11-23 23:45:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:51,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2024-11-23 23:45:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:51,287 INFO L225 Difference]: With dead ends: 1179 [2024-11-23 23:45:51,289 INFO L226 Difference]: Without dead ends: 587 [2024-11-23 23:45:51,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:51,294 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 63 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5678 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 23:45:51,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5678 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-23 23:45:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-23 23:45:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 447 states have (on average 1.633109619686801) internal successors, (730), 463 states have internal predecessors, (730), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 953 transitions. [2024-11-23 23:45:51,355 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 953 transitions. Word has length 117 [2024-11-23 23:45:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:51,356 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 953 transitions. [2024-11-23 23:45:51,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 953 transitions. [2024-11-23 23:45:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:45:51,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:51,363 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:51,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:45:51,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:51,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -202851626, now seen corresponding path program 1 times [2024-11-23 23:45:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979376777] [2024-11-23 23:45:51,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979376777] [2024-11-23 23:45:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979376777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:51,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:51,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:51,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748478246] [2024-11-23 23:45:51,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:51,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:51,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:51,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:51,700 INFO L87 Difference]: Start difference. First operand 587 states and 953 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:51,835 INFO L93 Difference]: Finished difference Result 1167 states and 1905 transitions. [2024-11-23 23:45:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-11-23 23:45:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:51,844 INFO L225 Difference]: With dead ends: 1167 [2024-11-23 23:45:51,844 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:51,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:51,879 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 49 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5618 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 23:45:51,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5618 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6258503401360545) internal successors, (717), 457 states have internal predecessors, (717), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 940 transitions. [2024-11-23 23:45:51,915 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 940 transitions. Word has length 118 [2024-11-23 23:45:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:51,916 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 940 transitions. [2024-11-23 23:45:51,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 940 transitions. [2024-11-23 23:45:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:45:51,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:51,920 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:51,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:45:51,920 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:51,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1039516695, now seen corresponding path program 1 times [2024-11-23 23:45:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720701757] [2024-11-23 23:45:51,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:51,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:52,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720701757] [2024-11-23 23:45:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720701757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001644485] [2024-11-23 23:45:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:52,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:52,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:52,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:52,220 INFO L87 Difference]: Start difference. First operand 581 states and 940 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:52,331 INFO L93 Difference]: Finished difference Result 1155 states and 1879 transitions. [2024-11-23 23:45:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-11-23 23:45:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:52,338 INFO L225 Difference]: With dead ends: 1155 [2024-11-23 23:45:52,339 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:52,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:52,344 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 24 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5570 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 23:45:52,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5570 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6235827664399094) internal successors, (716), 457 states have internal predecessors, (716), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 939 transitions. [2024-11-23 23:45:52,382 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 939 transitions. Word has length 118 [2024-11-23 23:45:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:52,383 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 939 transitions. [2024-11-23 23:45:52,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 939 transitions. [2024-11-23 23:45:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:45:52,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:52,387 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:52,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:45:52,387 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:52,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1739769567, now seen corresponding path program 1 times [2024-11-23 23:45:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:52,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097795055] [2024-11-23 23:45:52,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:52,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:52,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097795055] [2024-11-23 23:45:52,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097795055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:52,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:52,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:52,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260092997] [2024-11-23 23:45:52,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:52,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:52,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:52,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:52,588 INFO L87 Difference]: Start difference. First operand 581 states and 939 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:52,674 INFO L93 Difference]: Finished difference Result 1146 states and 1864 transitions. [2024-11-23 23:45:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 119 [2024-11-23 23:45:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:52,685 INFO L225 Difference]: With dead ends: 1146 [2024-11-23 23:45:52,685 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:52,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:52,690 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 15 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2757 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 23:45:52,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2757 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6213151927437641) internal successors, (715), 457 states have internal predecessors, (715), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 938 transitions. [2024-11-23 23:45:52,726 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 938 transitions. Word has length 119 [2024-11-23 23:45:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:52,727 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 938 transitions. [2024-11-23 23:45:52,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 938 transitions. [2024-11-23 23:45:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 23:45:52,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:52,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:52,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:45:52,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:52,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash -195818218, now seen corresponding path program 1 times [2024-11-23 23:45:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656338278] [2024-11-23 23:45:52,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:53,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:53,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656338278] [2024-11-23 23:45:53,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656338278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:53,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:53,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602141353] [2024-11-23 23:45:53,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:53,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:53,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:53,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:53,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,008 INFO L87 Difference]: Start difference. First operand 581 states and 938 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:53,102 INFO L93 Difference]: Finished difference Result 1146 states and 1862 transitions. [2024-11-23 23:45:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:53,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-23 23:45:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:53,108 INFO L225 Difference]: With dead ends: 1146 [2024-11-23 23:45:53,109 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:53,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,114 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 14 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2759 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 23:45:53,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2759 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.619047619047619) internal successors, (714), 457 states have internal predecessors, (714), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 937 transitions. [2024-11-23 23:45:53,153 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 937 transitions. Word has length 120 [2024-11-23 23:45:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:53,153 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 937 transitions. [2024-11-23 23:45:53,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 937 transitions. [2024-11-23 23:45:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:45:53,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:53,159 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:53,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:45:53,159 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:53,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1103826438, now seen corresponding path program 1 times [2024-11-23 23:45:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656603945] [2024-11-23 23:45:53,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656603945] [2024-11-23 23:45:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656603945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:53,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:53,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641045793] [2024-11-23 23:45:53,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:53,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:53,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:53,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,382 INFO L87 Difference]: Start difference. First operand 581 states and 937 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:53,466 INFO L93 Difference]: Finished difference Result 1146 states and 1860 transitions. [2024-11-23 23:45:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2024-11-23 23:45:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:53,472 INFO L225 Difference]: With dead ends: 1146 [2024-11-23 23:45:53,472 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:53,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,477 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 13 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:53,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.616780045351474) internal successors, (713), 457 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 936 transitions. [2024-11-23 23:45:53,511 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 936 transitions. Word has length 121 [2024-11-23 23:45:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:53,511 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 936 transitions. [2024-11-23 23:45:53,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 936 transitions. [2024-11-23 23:45:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:45:53,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:53,516 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:53,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:45:53,516 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:53,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -875069093, now seen corresponding path program 1 times [2024-11-23 23:45:53,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:53,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333512625] [2024-11-23 23:45:53,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:53,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333512625] [2024-11-23 23:45:53,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333512625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:53,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:53,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:53,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119567525] [2024-11-23 23:45:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:53,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:53,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:53,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,702 INFO L87 Difference]: Start difference. First operand 581 states and 936 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:53,780 INFO L93 Difference]: Finished difference Result 1146 states and 1858 transitions. [2024-11-23 23:45:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:53,781 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2024-11-23 23:45:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:53,786 INFO L225 Difference]: With dead ends: 1146 [2024-11-23 23:45:53,787 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 23:45:53,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:53,791 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 12 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2763 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 23:45:53,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2763 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 23:45:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-23 23:45:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6145124716553287) internal successors, (712), 457 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:45:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 935 transitions. [2024-11-23 23:45:53,825 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 935 transitions. Word has length 122 [2024-11-23 23:45:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:53,825 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 935 transitions. [2024-11-23 23:45:53,825 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:45:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 935 transitions. [2024-11-23 23:45:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:45:53,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:53,830 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:53,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:45:53,830 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:53,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1409495317, now seen corresponding path program 1 times [2024-11-23 23:45:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850228421] [2024-11-23 23:45:53,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:45:54,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:54,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850228421] [2024-11-23 23:45:54,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850228421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285705623] [2024-11-23 23:45:54,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:54,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:54,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:45:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:54,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:45:54,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 23:45:55,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:45:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285705623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:55,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:45:55,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-23 23:45:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627037997] [2024-11-23 23:45:55,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:55,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:55,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:55,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:45:55,097 INFO L87 Difference]: Start difference. First operand 581 states and 935 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:55,229 INFO L93 Difference]: Finished difference Result 1654 states and 2693 transitions. [2024-11-23 23:45:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-11-23 23:45:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:55,242 INFO L225 Difference]: With dead ends: 1654 [2024-11-23 23:45:55,242 INFO L226 Difference]: Without dead ends: 1091 [2024-11-23 23:45:55,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:45:55,248 INFO L435 NwaCegarLoop]: 1607 mSDtfsCounter, 858 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2438 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 23:45:55,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2438 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-11-23 23:45:55,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1076. [2024-11-23 23:45:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 824 states have (on average 1.6262135922330097) internal successors, (1340), 855 states have internal predecessors, (1340), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2024-11-23 23:45:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1744 transitions. [2024-11-23 23:45:55,334 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1744 transitions. Word has length 123 [2024-11-23 23:45:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:55,335 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1744 transitions. [2024-11-23 23:45:55,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1744 transitions. [2024-11-23 23:45:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:45:55,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:55,344 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:55,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:45:55,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 23:45:55,549 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:55,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2047834707, now seen corresponding path program 1 times [2024-11-23 23:45:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822810056] [2024-11-23 23:45:55,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:45:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822810056] [2024-11-23 23:45:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822810056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:56,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083550145] [2024-11-23 23:45:56,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:56,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:56,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:56,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:56,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:45:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:56,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:45:56,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 23:45:56,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:45:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083550145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:56,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:45:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-23 23:45:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402292753] [2024-11-23 23:45:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:56,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:56,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:56,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:45:56,720 INFO L87 Difference]: Start difference. First operand 1076 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:56,887 INFO L93 Difference]: Finished difference Result 2644 states and 4313 transitions. [2024-11-23 23:45:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-11-23 23:45:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:56,906 INFO L225 Difference]: With dead ends: 2644 [2024-11-23 23:45:56,907 INFO L226 Difference]: Without dead ends: 1586 [2024-11-23 23:45:56,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:45:56,917 INFO L435 NwaCegarLoop]: 1663 mSDtfsCounter, 860 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2492 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 23:45:56,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2492 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-23 23:45:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1538. [2024-11-23 23:45:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1180 states have (on average 1.6372881355932203) internal successors, (1932), 1226 states have internal predecessors, (1932), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2024-11-23 23:45:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2511 transitions. [2024-11-23 23:45:57,053 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2511 transitions. Word has length 124 [2024-11-23 23:45:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:57,054 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2511 transitions. [2024-11-23 23:45:57,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:45:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2511 transitions. [2024-11-23 23:45:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:45:57,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:57,065 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:57,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:45:57,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:45:57,270 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:57,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash 849224441, now seen corresponding path program 1 times [2024-11-23 23:45:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939819517] [2024-11-23 23:45:57,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:45:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939819517] [2024-11-23 23:45:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939819517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:45:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192546474] [2024-11-23 23:45:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:57,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:45:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:57,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:45:57,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:45:57,608 INFO L87 Difference]: Start difference. First operand 1538 states and 2511 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:45:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:58,683 INFO L93 Difference]: Finished difference Result 4538 states and 7558 transitions. [2024-11-23 23:45:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2024-11-23 23:45:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:58,721 INFO L225 Difference]: With dead ends: 4538 [2024-11-23 23:45:58,721 INFO L226 Difference]: Without dead ends: 3018 [2024-11-23 23:45:58,737 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 23:45:58,738 INFO L435 NwaCegarLoop]: 1037 mSDtfsCounter, 931 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:58,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 4770 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:45:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2024-11-23 23:45:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2971. [2024-11-23 23:45:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2281 states have (on average 1.6370013152126262) internal successors, (3734), 2369 states have internal predecessors, (3734), 551 states have call successors, (551), 136 states have call predecessors, (551), 138 states have return successors, (655), 543 states have call predecessors, (655), 547 states have call successors, (655) [2024-11-23 23:45:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4940 transitions. [2024-11-23 23:45:59,057 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4940 transitions. Word has length 126 [2024-11-23 23:45:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:59,058 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4940 transitions. [2024-11-23 23:45:59,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:45:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4940 transitions. [2024-11-23 23:45:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:45:59,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:59,069 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:59,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:45:59,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:59,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1988718745, now seen corresponding path program 1 times [2024-11-23 23:45:59,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:59,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007429790] [2024-11-23 23:45:59,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:45:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007429790] [2024-11-23 23:45:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007429790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806260970] [2024-11-23 23:45:59,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:59,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:59,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:59,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:46:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:00,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:46:00,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:46:00,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806260970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:00,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-23 23:46:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367140668] [2024-11-23 23:46:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:00,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:00,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:00,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:46:00,388 INFO L87 Difference]: Start difference. First operand 2971 states and 4940 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-23 23:46:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:01,866 INFO L93 Difference]: Finished difference Result 8060 states and 13612 transitions. [2024-11-23 23:46:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:46:01,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-11-23 23:46:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:01,926 INFO L225 Difference]: With dead ends: 8060 [2024-11-23 23:46:01,926 INFO L226 Difference]: Without dead ends: 5107 [2024-11-23 23:46:01,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:46:01,969 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 794 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 4072 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:01,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 4072 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:46:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2024-11-23 23:46:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5064. [2024-11-23 23:46:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 3882 states have (on average 1.5909325090159712) internal successors, (6176), 4028 states have internal predecessors, (6176), 930 states have call successors, (930), 246 states have call predecessors, (930), 251 states have return successors, (1213), 919 states have call predecessors, (1213), 924 states have call successors, (1213) [2024-11-23 23:46:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 8319 transitions. [2024-11-23 23:46:02,515 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 8319 transitions. Word has length 127 [2024-11-23 23:46:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:02,516 INFO L471 AbstractCegarLoop]: Abstraction has 5064 states and 8319 transitions. [2024-11-23 23:46:02,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-23 23:46:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 8319 transitions. [2024-11-23 23:46:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:46:02,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:02,521 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:02,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:46:02,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:46:02,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:02,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1350928651, now seen corresponding path program 1 times [2024-11-23 23:46:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:02,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39746879] [2024-11-23 23:46:02,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:46:02,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39746879] [2024-11-23 23:46:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39746879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841041409] [2024-11-23 23:46:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:02,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:02,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:02,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:02,875 INFO L87 Difference]: Start difference. First operand 5064 states and 8319 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:46:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:03,367 INFO L93 Difference]: Finished difference Result 10134 states and 16813 transitions. [2024-11-23 23:46:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-23 23:46:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:03,426 INFO L225 Difference]: With dead ends: 10134 [2024-11-23 23:46:03,426 INFO L226 Difference]: Without dead ends: 5088 [2024-11-23 23:46:03,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:46:03,463 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 12 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:03,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2727 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2024-11-23 23:46:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 5072. [2024-11-23 23:46:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 3888 states have (on average 1.5895061728395061) internal successors, (6180), 4034 states have internal predecessors, (6180), 930 states have call successors, (930), 250 states have call predecessors, (930), 253 states have return successors, (1202), 917 states have call predecessors, (1202), 924 states have call successors, (1202) [2024-11-23 23:46:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 8312 transitions. [2024-11-23 23:46:03,987 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 8312 transitions. Word has length 127 [2024-11-23 23:46:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:03,987 INFO L471 AbstractCegarLoop]: Abstraction has 5072 states and 8312 transitions. [2024-11-23 23:46:03,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:46:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 8312 transitions. [2024-11-23 23:46:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 23:46:03,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:03,996 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:03,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:46:03,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:03,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786511, now seen corresponding path program 1 times [2024-11-23 23:46:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:03,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343364495] [2024-11-23 23:46:03,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:46:04,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:04,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343364495] [2024-11-23 23:46:04,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343364495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:04,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:04,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:04,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98948691] [2024-11-23 23:46:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:04,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:04,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:04,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:04,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:04,256 INFO L87 Difference]: Start difference. First operand 5072 states and 8312 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 23:46:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:05,699 INFO L93 Difference]: Finished difference Result 15149 states and 25617 transitions. [2024-11-23 23:46:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:46:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-11-23 23:46:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:05,836 INFO L225 Difference]: With dead ends: 15149 [2024-11-23 23:46:05,836 INFO L226 Difference]: Without dead ends: 10095 [2024-11-23 23:46:05,875 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 23:46:05,876 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 925 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:05,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4647 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:46:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10095 states. [2024-11-23 23:46:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 10026. [2024-11-23 23:46:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7688 states have (on average 1.5854578563995838) internal successors, (12189), 7974 states have internal predecessors, (12189), 1832 states have call successors, (1832), 494 states have call predecessors, (1832), 505 states have return successors, (2816), 1817 states have call predecessors, (2816), 1822 states have call successors, (2816) [2024-11-23 23:46:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16837 transitions. [2024-11-23 23:46:06,851 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16837 transitions. Word has length 135 [2024-11-23 23:46:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:06,852 INFO L471 AbstractCegarLoop]: Abstraction has 10026 states and 16837 transitions. [2024-11-23 23:46:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 23:46:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16837 transitions. [2024-11-23 23:46:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:46:06,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:06,863 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:06,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:46:06,864 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:06,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 982550885, now seen corresponding path program 1 times [2024-11-23 23:46:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417655483] [2024-11-23 23:46:06,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:46:07,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:07,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417655483] [2024-11-23 23:46:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417655483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:07,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476901248] [2024-11-23 23:46:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:07,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:07,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:07,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:07,059 INFO L87 Difference]: Start difference. First operand 10026 states and 16837 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 23:46:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:07,959 INFO L93 Difference]: Finished difference Result 20106 states and 34247 transitions. [2024-11-23 23:46:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:07,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-11-23 23:46:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:08,076 INFO L225 Difference]: With dead ends: 20106 [2024-11-23 23:46:08,076 INFO L226 Difference]: Without dead ends: 10098 [2024-11-23 23:46:08,176 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 23:46:08,177 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 12 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:08,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2718 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10098 states. [2024-11-23 23:46:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10098 to 10066. [2024-11-23 23:46:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7724 states have (on average 1.5832470222682549) internal successors, (12229), 8002 states have internal predecessors, (12229), 1832 states have call successors, (1832), 510 states have call predecessors, (1832), 509 states have return successors, (2800), 1813 states have call predecessors, (2800), 1822 states have call successors, (2800) [2024-11-23 23:46:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 16861 transitions. [2024-11-23 23:46:08,883 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 16861 transitions. Word has length 136 [2024-11-23 23:46:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:08,883 INFO L471 AbstractCegarLoop]: Abstraction has 10066 states and 16861 transitions. [2024-11-23 23:46:08,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 23:46:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 16861 transitions. [2024-11-23 23:46:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 23:46:08,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:08,891 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:08,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:46:08,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:08,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 194595507, now seen corresponding path program 1 times [2024-11-23 23:46:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:08,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287522308] [2024-11-23 23:46:08,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 23:46:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287522308] [2024-11-23 23:46:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287522308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831099132] [2024-11-23 23:46:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:09,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:09,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:09,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:09,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:09,121 INFO L87 Difference]: Start difference. First operand 10066 states and 16861 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 23:46:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:10,732 INFO L93 Difference]: Finished difference Result 30209 states and 52906 transitions. [2024-11-23 23:46:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:46:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-23 23:46:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:11,076 INFO L225 Difference]: With dead ends: 30209 [2024-11-23 23:46:11,076 INFO L226 Difference]: Without dead ends: 20161 [2024-11-23 23:46:11,162 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 23:46:11,163 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 920 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:11,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 4669 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:46:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20161 states. [2024-11-23 23:46:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20161 to 20060. [2024-11-23 23:46:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20060 states, 15396 states have (on average 1.5798259288126786) internal successors, (24323), 15946 states have internal predecessors, (24323), 3642 states have call successors, (3642), 1014 states have call predecessors, (3642), 1021 states have return successors, (6872), 3619 states have call predecessors, (6872), 3624 states have call successors, (6872) [2024-11-23 23:46:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20060 states to 20060 states and 34837 transitions. [2024-11-23 23:46:13,122 INFO L78 Accepts]: Start accepts. Automaton has 20060 states and 34837 transitions. Word has length 145 [2024-11-23 23:46:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:13,124 INFO L471 AbstractCegarLoop]: Abstraction has 20060 states and 34837 transitions. [2024-11-23 23:46:13,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 23:46:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 20060 states and 34837 transitions. [2024-11-23 23:46:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 23:46:13,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:13,135 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:13,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:46:13,135 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:13,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -784701815, now seen corresponding path program 1 times [2024-11-23 23:46:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630094217] [2024-11-23 23:46:13,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:46:13,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630094217] [2024-11-23 23:46:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630094217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899425950] [2024-11-23 23:46:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:13,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:13,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:13,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:13,330 INFO L87 Difference]: Start difference. First operand 20060 states and 34837 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:46:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:15,020 INFO L93 Difference]: Finished difference Result 40246 states and 71509 transitions. [2024-11-23 23:46:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-23 23:46:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:15,240 INFO L225 Difference]: With dead ends: 40246 [2024-11-23 23:46:15,240 INFO L226 Difference]: Without dead ends: 20204 [2024-11-23 23:46:15,456 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 23:46:15,456 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 11 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:15,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2718 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:46:15,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20204 states. [2024-11-23 23:46:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20204 to 20140. [2024-11-23 23:46:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 15468 states have (on average 1.5776441686061546) internal successors, (24403), 16018 states have internal predecessors, (24403), 3642 states have call successors, (3642), 1030 states have call predecessors, (3642), 1029 states have return successors, (6852), 3611 states have call predecessors, (6852), 3624 states have call successors, (6852) [2024-11-23 23:46:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 34897 transitions. [2024-11-23 23:46:17,129 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 34897 transitions. Word has length 146 [2024-11-23 23:46:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:17,129 INFO L471 AbstractCegarLoop]: Abstraction has 20140 states and 34897 transitions. [2024-11-23 23:46:17,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:46:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 34897 transitions. [2024-11-23 23:46:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:46:17,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:17,142 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:17,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:46:17,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:17,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 259478515, now seen corresponding path program 1 times [2024-11-23 23:46:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:17,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215166557] [2024-11-23 23:46:17,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-23 23:46:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215166557] [2024-11-23 23:46:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215166557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:17,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:46:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664479197] [2024-11-23 23:46:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:17,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:17,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:17,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:46:17,452 INFO L87 Difference]: Start difference. First operand 20140 states and 34897 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:46:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:20,901 INFO L93 Difference]: Finished difference Result 60557 states and 112515 transitions. [2024-11-23 23:46:20,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:46:20,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-11-23 23:46:20,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:21,580 INFO L225 Difference]: With dead ends: 60557 [2024-11-23 23:46:21,581 INFO L226 Difference]: Without dead ends: 40435 [2024-11-23 23:46:22,030 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 23:46:22,034 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 916 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:22,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4640 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:46:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40435 states. [2024-11-23 23:46:24,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40435 to 40270. [2024-11-23 23:46:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40270 states, 30932 states have (on average 1.5752295357558515) internal successors, (48725), 32026 states have internal predecessors, (48725), 7268 states have call successors, (7268), 2054 states have call predecessors, (7268), 2069 states have return successors, (17860), 7229 states have call predecessors, (17860), 7234 states have call successors, (17860) [2024-11-23 23:46:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40270 states to 40270 states and 73853 transitions. [2024-11-23 23:46:25,430 INFO L78 Accepts]: Start accepts. Automaton has 40270 states and 73853 transitions. Word has length 156 [2024-11-23 23:46:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:25,431 INFO L471 AbstractCegarLoop]: Abstraction has 40270 states and 73853 transitions. [2024-11-23 23:46:25,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:46:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 40270 states and 73853 transitions. [2024-11-23 23:46:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-23 23:46:25,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:25,442 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:46:25,442 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:25,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1868300399, now seen corresponding path program 1 times [2024-11-23 23:46:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769684083] [2024-11-23 23:46:25,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:46:25,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769684083] [2024-11-23 23:46:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769684083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:25,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86598038] [2024-11-23 23:46:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:25,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:25,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:25,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:25,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:25,932 INFO L87 Difference]: Start difference. First operand 40270 states and 73853 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:46:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:29,274 INFO L93 Difference]: Finished difference Result 80842 states and 154011 transitions. [2024-11-23 23:46:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:46:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-11-23 23:46:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:29,698 INFO L225 Difference]: With dead ends: 80842 [2024-11-23 23:46:29,698 INFO L226 Difference]: Without dead ends: 40590 [2024-11-23 23:46:30,686 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 23:46:30,687 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 10 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:30,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2718 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:46:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40590 states. [2024-11-23 23:46:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40590 to 40462. [2024-11-23 23:46:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40462 states, 31108 states have (on average 1.5724893917963225) internal successors, (48917), 32202 states have internal predecessors, (48917), 7268 states have call successors, (7268), 2086 states have call predecessors, (7268), 2085 states have return successors, (17844), 7213 states have call predecessors, (17844), 7234 states have call successors, (17844) [2024-11-23 23:46:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40462 states to 40462 states and 74029 transitions. [2024-11-23 23:46:33,561 INFO L78 Accepts]: Start accepts. Automaton has 40462 states and 74029 transitions. Word has length 157 [2024-11-23 23:46:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:33,562 INFO L471 AbstractCegarLoop]: Abstraction has 40462 states and 74029 transitions. [2024-11-23 23:46:33,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:46:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 40462 states and 74029 transitions. [2024-11-23 23:46:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 23:46:33,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:33,573 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:46:33,574 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:33,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1507101688, now seen corresponding path program 1 times [2024-11-23 23:46:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070296755] [2024-11-23 23:46:33,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 23:46:33,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:33,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070296755] [2024-11-23 23:46:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070296755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125389614] [2024-11-23 23:46:33,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:33,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:33,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:46:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:34,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:46:34,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-23 23:46:34,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125389614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:34,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:34,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-23 23:46:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512256580] [2024-11-23 23:46:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:34,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:46:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:34,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:46:34,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:46:34,401 INFO L87 Difference]: Start difference. First operand 40462 states and 74029 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (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 23:46:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:38,610 INFO L93 Difference]: Finished difference Result 120223 states and 223487 transitions. [2024-11-23 23:46:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:46:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (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 168 [2024-11-23 23:46:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:39,671 INFO L225 Difference]: With dead ends: 120223 [2024-11-23 23:46:39,671 INFO L226 Difference]: Without dead ends: 79810 [2024-11-23 23:46:39,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 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 23:46:40,001 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 921 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:40,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1858 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79810 states. [2024-11-23 23:46:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79810 to 79245. [2024-11-23 23:46:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79245 states, 61126 states have (on average 1.5758269803357001) internal successors, (96324), 63199 states have internal predecessors, (96324), 14049 states have call successors, (14049), 4038 states have call predecessors, (14049), 4069 states have return successors, (35421), 14055 states have call predecessors, (35421), 13983 states have call successors, (35421) [2024-11-23 23:46:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79245 states to 79245 states and 145794 transitions. [2024-11-23 23:46:44,984 INFO L78 Accepts]: Start accepts. Automaton has 79245 states and 145794 transitions. Word has length 168 [2024-11-23 23:46:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:44,985 INFO L471 AbstractCegarLoop]: Abstraction has 79245 states and 145794 transitions. [2024-11-23 23:46:44,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (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 23:46:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 79245 states and 145794 transitions. [2024-11-23 23:46:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 23:46:44,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:44,993 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:45,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:45,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:45,194 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:45,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2093907702, now seen corresponding path program 1 times [2024-11-23 23:46:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399984878] [2024-11-23 23:46:45,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 23:46:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:45,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399984878] [2024-11-23 23:46:45,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399984878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:45,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391621898] [2024-11-23 23:46:45,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:45,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:45,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:45,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:45,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88449edf-db1b-41f9-a611-cd992c60a280/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:46:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:46,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:46:46,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 23:46:46,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:46:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391621898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:46,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:46:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-23 23:46:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012276911] [2024-11-23 23:46:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:46,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:46:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:46,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:46:46,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:46:46,236 INFO L87 Difference]: Start difference. First operand 79245 states and 145794 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)