./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.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_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/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_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/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_340ed683-04a8-4941-b309-0c5b51544b97/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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:30:43,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:30:43,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:30:43,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:30:43,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:30:43,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:30:43,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:30:43,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:30:43,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:30:43,318 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:30:43,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:30:43,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:30:43,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:30:43,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:30:43,319 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:30:43,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:30:43,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:30:43,320 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:30:43,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:30:43,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:30:43,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:30:43,322 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:30:43,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:30:43,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:30:43,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:43,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:43,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:43,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:43,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:30:43,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:30:43,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:30:43,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:30:43,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:30:43,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:30:43,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:30:43,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:30:43,325 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_340ed683-04a8-4941-b309-0c5b51544b97/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 -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2024-11-23 18:30:43,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:30:43,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:30:43,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:30:43,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:30:43,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:30:43,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-11-23 18:30:47,137 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/data/7a644e5ec/41b08bba47304906a374d04bbeffecb4/FLAGcdd86a712 [2024-11-23 18:30:47,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:30:47,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-11-23 18:30:47,671 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/data/7a644e5ec/41b08bba47304906a374d04bbeffecb4/FLAGcdd86a712 [2024-11-23 18:30:47,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/data/7a644e5ec/41b08bba47304906a374d04bbeffecb4 [2024-11-23 18:30:47,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:30:47,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:30:47,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:47,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:30:47,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:30:47,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:47" (1/1) ... [2024-11-23 18:30:47,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fb3b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:47, skipping insertion in model container [2024-11-23 18:30:47,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:47" (1/1) ... [2024-11-23 18:30:47,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:30:48,228 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_340ed683-04a8-4941-b309-0c5b51544b97/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-23 18:30:48,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:48,436 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:30:48,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-23 18:30:48,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2024-11-23 18:30:48,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2024-11-23 18:30:48,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2024-11-23 18:30:48,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2024-11-23 18:30:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2024-11-23 18:30:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2024-11-23 18:30:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2024-11-23 18:30:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2024-11-23 18:30:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2024-11-23 18:30:48,590 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_340ed683-04a8-4941-b309-0c5b51544b97/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-23 18:30:48,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:48,705 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:30:48,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48 WrapperNode [2024-11-23 18:30:48,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:48,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:48,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:30:48,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:30:48,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,803 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 860 [2024-11-23 18:30:48,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:48,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:30:48,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:30:48,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:30:48,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,883 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 18:30:48,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,905 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:30:48,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:30:48,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:30:48,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:30:48,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (1/1) ... [2024-11-23 18:30:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:49,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:30:49,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:30:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-23 18:30:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-23 18:30:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:30:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-23 18:30:49,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-23 18:30:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 18:30:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 18:30:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 18:30:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 18:30:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 18:30:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 18:30:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 18:30:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 18:30:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 18:30:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 18:30:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 18:30:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 18:30:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 18:30:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 18:30:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 18:30:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:30:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:30:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:30:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:30:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:30:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 18:30:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:30:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 18:30:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 18:30:49,314 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:30:49,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:30:51,206 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-11-23 18:30:51,206 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:30:51,235 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:30:51,235 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-23 18:30:51,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:51 BoogieIcfgContainer [2024-11-23 18:30:51,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:30:51,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:30:51,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:30:51,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:30:51,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:30:47" (1/3) ... [2024-11-23 18:30:51,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1b3e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:51, skipping insertion in model container [2024-11-23 18:30:51,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:48" (2/3) ... [2024-11-23 18:30:51,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1b3e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:51, skipping insertion in model container [2024-11-23 18:30:51,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:51" (3/3) ... [2024-11-23 18:30:51,247 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2024-11-23 18:30:51,265 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:30:51,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product29.cil.c that has 26 procedures, 597 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-23 18:30:51,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:30:51,405 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;@344ea578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:30:51,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:30:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 470 states have (on average 1.7) internal successors, (799), 488 states have internal predecessors, (799), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 18:30:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 18:30:51,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:51,465 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:51,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:51,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 591917306, now seen corresponding path program 1 times [2024-11-23 18:30:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:51,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406362315] [2024-11-23 18:30:51,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:30:52,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406362315] [2024-11-23 18:30:52,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406362315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:52,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725404497] [2024-11-23 18:30:52,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:52,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:52,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:30:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:53,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:30:53,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 18:30:53,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:53,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725404497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:53,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:53,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-23 18:30:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609137103] [2024-11-23 18:30:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:53,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:30:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:53,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:30:53,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:53,287 INFO L87 Difference]: Start difference. First operand has 597 states, 470 states have (on average 1.7) internal successors, (799), 488 states have internal predecessors, (799), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:53,474 INFO L93 Difference]: Finished difference Result 1172 states and 1981 transitions. [2024-11-23 18:30:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:30:53,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-23 18:30:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:53,532 INFO L225 Difference]: With dead ends: 1172 [2024-11-23 18:30:53,532 INFO L226 Difference]: Without dead ends: 587 [2024-11-23 18:30:53,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:30:53,567 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:53,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-23 18:30:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-23 18:30:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 463 states have (on average 1.6825053995680346) internal successors, (779), 479 states have internal predecessors, (779), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 18:30:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 976 transitions. [2024-11-23 18:30:53,704 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 976 transitions. Word has length 114 [2024-11-23 18:30:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:53,708 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 976 transitions. [2024-11-23 18:30:53,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 976 transitions. [2024-11-23 18:30:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 18:30:53,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:53,725 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:53,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:53,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:30:53,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:53,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -670493254, now seen corresponding path program 1 times [2024-11-23 18:30:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887609540] [2024-11-23 18:30:53,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:30:54,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:54,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887609540] [2024-11-23 18:30:54,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887609540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:54,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621815329] [2024-11-23 18:30:54,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:54,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:54,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:54,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:54,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:30:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:54,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:54,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:30:54,981 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621815329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:54,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-23 18:30:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539951160] [2024-11-23 18:30:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:54,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:54,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:54,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:30:54,987 INFO L87 Difference]: Start difference. First operand 587 states and 976 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:55,192 INFO L93 Difference]: Finished difference Result 1175 states and 1960 transitions. [2024-11-23 18:30:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-23 18:30:55,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:55,199 INFO L225 Difference]: With dead ends: 1175 [2024-11-23 18:30:55,199 INFO L226 Difference]: Without dead ends: 596 [2024-11-23 18:30:55,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:30:55,204 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 17 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:55,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2881 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-23 18:30:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2024-11-23 18:30:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 471 states have (on average 1.683651804670913) internal successors, (793), 487 states have internal predecessors, (793), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 18:30:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 990 transitions. [2024-11-23 18:30:55,264 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 990 transitions. Word has length 114 [2024-11-23 18:30:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:55,267 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 990 transitions. [2024-11-23 18:30:55,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 990 transitions. [2024-11-23 18:30:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 18:30:55,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:55,278 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:55,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:30:55,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:55,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:55,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -592583340, now seen corresponding path program 1 times [2024-11-23 18:30:55,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:55,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935352884] [2024-11-23 18:30:55,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:55,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:30:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935352884] [2024-11-23 18:30:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935352884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869259198] [2024-11-23 18:30:55,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:55,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:55,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:55,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:30:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:56,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:56,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:30:56,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869259198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:56,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:56,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 18:30:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574979343] [2024-11-23 18:30:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:56,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:56,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:56,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:30:56,493 INFO L87 Difference]: Start difference. First operand 596 states and 990 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:56,952 INFO L93 Difference]: Finished difference Result 1245 states and 2084 transitions. [2024-11-23 18:30:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:30:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-11-23 18:30:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:56,963 INFO L225 Difference]: With dead ends: 1245 [2024-11-23 18:30:56,963 INFO L226 Difference]: Without dead ends: 659 [2024-11-23 18:30:56,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:30:56,969 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 122 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:56,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2776 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:30:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-23 18:30:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 641. [2024-11-23 18:30:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 515 states have (on average 1.7029126213592234) internal successors, (877), 531 states have internal predecessors, (877), 100 states have call successors, (100), 27 states have call predecessors, (100), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-23 18:30:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1074 transitions. [2024-11-23 18:30:57,031 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1074 transitions. Word has length 116 [2024-11-23 18:30:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:57,032 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1074 transitions. [2024-11-23 18:30:57,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:30:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1074 transitions. [2024-11-23 18:30:57,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 18:30:57,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:57,038 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:57,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:57,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:57,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:57,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -992951112, now seen corresponding path program 1 times [2024-11-23 18:30:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313877456] [2024-11-23 18:30:57,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:30:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313877456] [2024-11-23 18:30:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313877456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319853508] [2024-11-23 18:30:57,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:57,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:57,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:57,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:30:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:57,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:30:57,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:30:58,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319853508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:58,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:58,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:30:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386635162] [2024-11-23 18:30:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:30:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:58,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:30:58,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:30:58,127 INFO L87 Difference]: Start difference. First operand 641 states and 1074 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:30:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:58,359 INFO L93 Difference]: Finished difference Result 1297 states and 2175 transitions. [2024-11-23 18:30:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:30:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2024-11-23 18:30:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:58,393 INFO L225 Difference]: With dead ends: 1297 [2024-11-23 18:30:58,393 INFO L226 Difference]: Without dead ends: 666 [2024-11-23 18:30:58,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:30:58,399 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 89 mSDsluCounter, 4723 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:58,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5686 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-23 18:30:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 654. [2024-11-23 18:30:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 525 states have (on average 1.6990476190476191) internal successors, (892), 543 states have internal predecessors, (892), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-23 18:30:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1095 transitions. [2024-11-23 18:30:58,457 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1095 transitions. Word has length 118 [2024-11-23 18:30:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:58,458 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1095 transitions. [2024-11-23 18:30:58,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:30:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1095 transitions. [2024-11-23 18:30:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 18:30:58,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:58,464 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:58,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:30:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:58,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 473534729, now seen corresponding path program 1 times [2024-11-23 18:30:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551669865] [2024-11-23 18:30:58,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:30:58,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:58,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551669865] [2024-11-23 18:30:58,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551669865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:58,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332641310] [2024-11-23 18:30:58,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:58,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:58,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:30:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:59,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:30:59,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:30:59,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332641310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:59,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:30:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991122531] [2024-11-23 18:30:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:59,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:30:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:59,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:30:59,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:30:59,458 INFO L87 Difference]: Start difference. First operand 654 states and 1095 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:30:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:59,617 INFO L93 Difference]: Finished difference Result 1317 states and 2206 transitions. [2024-11-23 18:30:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:30:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-11-23 18:30:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:59,624 INFO L225 Difference]: With dead ends: 1317 [2024-11-23 18:30:59,624 INFO L226 Difference]: Without dead ends: 675 [2024-11-23 18:30:59,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:30:59,629 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 100 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5674 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:59,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5674 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-23 18:30:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 654. [2024-11-23 18:30:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 525 states have (on average 1.6990476190476191) internal successors, (892), 543 states have internal predecessors, (892), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-23 18:30:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1095 transitions. [2024-11-23 18:30:59,666 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1095 transitions. Word has length 119 [2024-11-23 18:30:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:59,666 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1095 transitions. [2024-11-23 18:30:59,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:30:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1095 transitions. [2024-11-23 18:30:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 18:30:59,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:59,671 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:59,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:59,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:59,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:59,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1273412435, now seen corresponding path program 1 times [2024-11-23 18:30:59,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:59,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960793802] [2024-11-23 18:30:59,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:31:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960793802] [2024-11-23 18:31:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960793802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202077580] [2024-11-23 18:31:00,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:00,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:00,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:00,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:00,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:31:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:00,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:31:00,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:31:00,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:00,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202077580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:00,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:00,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:31:00,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942280310] [2024-11-23 18:31:00,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:00,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:00,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:00,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:00,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:00,467 INFO L87 Difference]: Start difference. First operand 654 states and 1095 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:00,602 INFO L93 Difference]: Finished difference Result 1311 states and 2196 transitions. [2024-11-23 18:31:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:00,603 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-23 18:31:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:00,610 INFO L225 Difference]: With dead ends: 1311 [2024-11-23 18:31:00,611 INFO L226 Difference]: Without dead ends: 665 [2024-11-23 18:31:00,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:00,616 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 12 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:00,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2883 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-23 18:31:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2024-11-23 18:31:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-11-23 18:31:00,657 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 119 [2024-11-23 18:31:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:00,657 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-11-23 18:31:00,657 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-11-23 18:31:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 18:31:00,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:00,662 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:00,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 18:31:00,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 18:31:00,867 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:00,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1514841036, now seen corresponding path program 1 times [2024-11-23 18:31:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022540831] [2024-11-23 18:31:00,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022540831] [2024-11-23 18:31:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022540831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574845854] [2024-11-23 18:31:01,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:01,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:01,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:31:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:01,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:31:01,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:31:01,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:01,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574845854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:01,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:01,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:31:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080597620] [2024-11-23 18:31:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:01,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:01,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:01,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:01,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:31:01,611 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:01,803 INFO L93 Difference]: Finished difference Result 1326 states and 2209 transitions. [2024-11-23 18:31:01,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:01,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-23 18:31:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:01,810 INFO L225 Difference]: With dead ends: 1326 [2024-11-23 18:31:01,810 INFO L226 Difference]: Without dead ends: 686 [2024-11-23 18:31:01,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:31:01,816 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 111 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:01,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5662 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-23 18:31:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 663. [2024-11-23 18:31:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-11-23 18:31:01,858 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 120 [2024-11-23 18:31:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:01,858 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-11-23 18:31:01,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-11-23 18:31:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 18:31:01,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:01,864 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:01,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 18:31:02,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 18:31:02,065 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:02,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1442850574, now seen corresponding path program 1 times [2024-11-23 18:31:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:02,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74725160] [2024-11-23 18:31:02,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74725160] [2024-11-23 18:31:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74725160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308644457] [2024-11-23 18:31:02,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:02,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:31:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:02,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:31:02,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:31:02,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:02,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308644457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:02,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:02,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:31:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48517385] [2024-11-23 18:31:02,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:02,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:02,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:02,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:02,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:31:02,967 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:03,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:03,255 INFO L93 Difference]: Finished difference Result 1329 states and 2213 transitions. [2024-11-23 18:31:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:31:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-23 18:31:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:03,263 INFO L225 Difference]: With dead ends: 1329 [2024-11-23 18:31:03,264 INFO L226 Difference]: Without dead ends: 689 [2024-11-23 18:31:03,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:31:03,268 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 95 mSDsluCounter, 5621 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:03,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6574 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:31:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-23 18:31:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2024-11-23 18:31:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-11-23 18:31:03,315 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 120 [2024-11-23 18:31:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:03,315 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-11-23 18:31:03,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-11-23 18:31:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 18:31:03,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:03,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:03,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 18:31:03,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:03,525 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:03,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1051100997, now seen corresponding path program 1 times [2024-11-23 18:31:03,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:03,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816216301] [2024-11-23 18:31:03,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:03,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816216301] [2024-11-23 18:31:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816216301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619096234] [2024-11-23 18:31:03,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:03,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:03,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:03,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:31:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:04,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:31:04,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:31:04,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:04,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619096234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:31:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743137078] [2024-11-23 18:31:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:04,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:04,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:04,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:31:04,349 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:04,631 INFO L93 Difference]: Finished difference Result 1329 states and 2213 transitions. [2024-11-23 18:31:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:31:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2024-11-23 18:31:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:04,638 INFO L225 Difference]: With dead ends: 1329 [2024-11-23 18:31:04,638 INFO L226 Difference]: Without dead ends: 689 [2024-11-23 18:31:04,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:31:04,643 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 105 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6562 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:04,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6562 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:31:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-23 18:31:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2024-11-23 18:31:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-11-23 18:31:04,681 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 121 [2024-11-23 18:31:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:04,681 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-11-23 18:31:04,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-11-23 18:31:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 18:31:04,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:04,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:04,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:31:04,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:04,888 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:04,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash 583147501, now seen corresponding path program 1 times [2024-11-23 18:31:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110058539] [2024-11-23 18:31:04,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110058539] [2024-11-23 18:31:05,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110058539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:05,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406001008] [2024-11-23 18:31:05,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:05,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:05,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:05,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:31:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:05,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:31:05,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:31:05,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406001008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:05,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:05,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:31:05,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603133652] [2024-11-23 18:31:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:05,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:05,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:05,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:31:05,641 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:05,883 INFO L93 Difference]: Finished difference Result 1320 states and 2198 transitions. [2024-11-23 18:31:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:31:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2024-11-23 18:31:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:05,891 INFO L225 Difference]: With dead ends: 1320 [2024-11-23 18:31:05,891 INFO L226 Difference]: Without dead ends: 680 [2024-11-23 18:31:05,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:31:05,896 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 115 mSDsluCounter, 5597 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6550 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:05,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6550 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:31:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-23 18:31:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 663. [2024-11-23 18:31:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-11-23 18:31:05,934 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 122 [2024-11-23 18:31:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:05,934 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-11-23 18:31:05,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-11-23 18:31:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 18:31:05,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:05,940 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:05,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 18:31:06,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:06,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:06,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -474054705, now seen corresponding path program 1 times [2024-11-23 18:31:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151866533] [2024-11-23 18:31:06,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:31:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151866533] [2024-11-23 18:31:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151866533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070965749] [2024-11-23 18:31:06,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:06,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:06,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:06,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:06,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:31:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:06,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:31:06,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:31:06,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070965749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:31:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969888629] [2024-11-23 18:31:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:06,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:06,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:06,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:06,735 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:06,844 INFO L93 Difference]: Finished difference Result 1292 states and 2158 transitions. [2024-11-23 18:31:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-23 18:31:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:06,851 INFO L225 Difference]: With dead ends: 1292 [2024-11-23 18:31:06,852 INFO L226 Difference]: Without dead ends: 663 [2024-11-23 18:31:06,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:06,857 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:06,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2877 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-23 18:31:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2024-11-23 18:31:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 551 states have internal predecessors, (896), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-23 18:31:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1098 transitions. [2024-11-23 18:31:06,896 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1098 transitions. Word has length 122 [2024-11-23 18:31:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:06,897 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1098 transitions. [2024-11-23 18:31:06,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1098 transitions. [2024-11-23 18:31:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 18:31:06,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:06,903 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:06,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:07,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:07,104 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1072503328, now seen corresponding path program 1 times [2024-11-23 18:31:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277688444] [2024-11-23 18:31:07,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:31:07,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277688444] [2024-11-23 18:31:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277688444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223227314] [2024-11-23 18:31:07,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:07,220 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:07,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:31:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:07,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:31:07,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 18:31:07,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223227314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:31:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626687389] [2024-11-23 18:31:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:07,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:07,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:07,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:07,663 INFO L87 Difference]: Start difference. First operand 663 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:07,943 INFO L93 Difference]: Finished difference Result 1321 states and 2198 transitions. [2024-11-23 18:31:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-23 18:31:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:07,951 INFO L225 Difference]: With dead ends: 1321 [2024-11-23 18:31:07,951 INFO L226 Difference]: Without dead ends: 750 [2024-11-23 18:31:07,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:07,956 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 171 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:07,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2749 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:31:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-23 18:31:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 708. [2024-11-23 18:31:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 577 states have (on average 1.6984402079722705) internal successors, (980), 595 states have internal predecessors, (980), 101 states have call successors, (101), 29 states have call predecessors, (101), 29 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-23 18:31:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1181 transitions. [2024-11-23 18:31:07,994 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1181 transitions. Word has length 123 [2024-11-23 18:31:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:07,995 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1181 transitions. [2024-11-23 18:31:07,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1181 transitions. [2024-11-23 18:31:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 18:31:08,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:08,000 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:08,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 18:31:08,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:08,201 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:08,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1541488891, now seen corresponding path program 1 times [2024-11-23 18:31:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:08,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790444544] [2024-11-23 18:31:08,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:31:08,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790444544] [2024-11-23 18:31:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790444544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144246393] [2024-11-23 18:31:08,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:08,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:08,323 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:08,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 18:31:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:08,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:31:08,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:31:08,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:08,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144246393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:08,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:08,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 18:31:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737307848] [2024-11-23 18:31:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:08,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:08,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:08,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:31:08,820 INFO L87 Difference]: Start difference. First operand 708 states and 1181 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:09,024 INFO L93 Difference]: Finished difference Result 1314 states and 2185 transitions. [2024-11-23 18:31:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-11-23 18:31:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:09,032 INFO L225 Difference]: With dead ends: 1314 [2024-11-23 18:31:09,032 INFO L226 Difference]: Without dead ends: 743 [2024-11-23 18:31:09,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:31:09,037 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 89 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5695 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:09,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5695 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-23 18:31:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 721. [2024-11-23 18:31:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-11-23 18:31:09,081 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 124 [2024-11-23 18:31:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:09,081 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-11-23 18:31:09,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:09,082 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-11-23 18:31:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 18:31:09,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:09,087 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:09,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 18:31:09,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:09,292 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:09,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1522799962, now seen corresponding path program 1 times [2024-11-23 18:31:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035891962] [2024-11-23 18:31:09,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:09,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035891962] [2024-11-23 18:31:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035891962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936057631] [2024-11-23 18:31:09,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:09,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:09,421 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:09,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 18:31:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:09,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:31:09,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:31:09,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:09,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936057631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:09,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 18:31:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503862630] [2024-11-23 18:31:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:09,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:09,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:09,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:31:09,932 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:10,127 INFO L93 Difference]: Finished difference Result 1323 states and 2199 transitions. [2024-11-23 18:31:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-23 18:31:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:10,134 INFO L225 Difference]: With dead ends: 1323 [2024-11-23 18:31:10,135 INFO L226 Difference]: Without dead ends: 752 [2024-11-23 18:31:10,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:31:10,140 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 100 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:10,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5683 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-23 18:31:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 721. [2024-11-23 18:31:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-11-23 18:31:10,181 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 125 [2024-11-23 18:31:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:10,183 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-11-23 18:31:10,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-11-23 18:31:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 18:31:10,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:10,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:10,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:10,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:10,389 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:10,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash -456161062, now seen corresponding path program 1 times [2024-11-23 18:31:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:10,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766387678] [2024-11-23 18:31:10,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:10,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:10,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:10,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766387678] [2024-11-23 18:31:10,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766387678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:10,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307411513] [2024-11-23 18:31:10,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:10,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:10,505 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 18:31:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:10,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:31:10,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:31:11,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307411513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:11,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:11,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 18:31:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922706112] [2024-11-23 18:31:11,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:11,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:11,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:11,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:31:11,007 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:11,227 INFO L93 Difference]: Finished difference Result 1326 states and 2202 transitions. [2024-11-23 18:31:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:31:11,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-23 18:31:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:11,235 INFO L225 Difference]: With dead ends: 1326 [2024-11-23 18:31:11,235 INFO L226 Difference]: Without dead ends: 755 [2024-11-23 18:31:11,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:31:11,240 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 96 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:11,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6584 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-23 18:31:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 721. [2024-11-23 18:31:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-11-23 18:31:11,313 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 125 [2024-11-23 18:31:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:11,313 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-11-23 18:31:11,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-11-23 18:31:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 18:31:11,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:11,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:11,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:11,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 18:31:11,522 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:11,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:11,523 INFO L85 PathProgramCache]: Analyzing trace with hash 183607056, now seen corresponding path program 1 times [2024-11-23 18:31:11,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:11,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593630746] [2024-11-23 18:31:11,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:31:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593630746] [2024-11-23 18:31:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593630746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084302489] [2024-11-23 18:31:11,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:11,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:11,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:11,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 18:31:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:12,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:31:12,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:31:12,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:12,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084302489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:12,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:12,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:31:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283878275] [2024-11-23 18:31:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:12,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:12,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:12,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:12,122 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:12,191 INFO L93 Difference]: Finished difference Result 1368 states and 2281 transitions. [2024-11-23 18:31:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-23 18:31:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:12,198 INFO L225 Difference]: With dead ends: 1368 [2024-11-23 18:31:12,198 INFO L226 Difference]: Without dead ends: 721 [2024-11-23 18:31:12,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:12,203 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 2 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:12,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2886 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-23 18:31:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-23 18:31:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6899488926746167) internal successors, (992), 607 states have internal predecessors, (992), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1197 transitions. [2024-11-23 18:31:12,240 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1197 transitions. Word has length 125 [2024-11-23 18:31:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:12,240 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1197 transitions. [2024-11-23 18:31:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1197 transitions. [2024-11-23 18:31:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 18:31:12,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:12,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:12,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 18:31:12,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:12,445 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:12,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 520163193, now seen corresponding path program 1 times [2024-11-23 18:31:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758252354] [2024-11-23 18:31:12,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:12,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:12,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758252354] [2024-11-23 18:31:12,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758252354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:12,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375063033] [2024-11-23 18:31:12,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:12,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:12,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:12,555 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:12,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 18:31:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:12,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:31:12,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:31:13,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375063033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 18:31:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359017293] [2024-11-23 18:31:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:13,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:31:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:13,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:31:13,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:31:13,047 INFO L87 Difference]: Start difference. First operand 721 states and 1197 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:13,262 INFO L93 Difference]: Finished difference Result 1317 states and 2185 transitions. [2024-11-23 18:31:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:31:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-11-23 18:31:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:13,269 INFO L225 Difference]: With dead ends: 1317 [2024-11-23 18:31:13,269 INFO L226 Difference]: Without dead ends: 746 [2024-11-23 18:31:13,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:31:13,273 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 106 mSDsluCounter, 5603 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6554 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:13,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6554 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-23 18:31:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 721. [2024-11-23 18:31:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6899488926746167) internal successors, (992), 607 states have internal predecessors, (992), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1197 transitions. [2024-11-23 18:31:13,314 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1197 transitions. Word has length 126 [2024-11-23 18:31:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:13,314 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1197 transitions. [2024-11-23 18:31:13,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1197 transitions. [2024-11-23 18:31:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 18:31:13,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:13,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:13,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 18:31:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:13,522 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1475939115, now seen corresponding path program 1 times [2024-11-23 18:31:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369209656] [2024-11-23 18:31:13,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369209656] [2024-11-23 18:31:13,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369209656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80535818] [2024-11-23 18:31:13,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:13,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:13,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:13,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 18:31:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:14,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:31:14,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:14,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80535818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:31:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093744666] [2024-11-23 18:31:14,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:14,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:14,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:14,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:31:14,116 INFO L87 Difference]: Start difference. First operand 721 states and 1197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:14,189 INFO L93 Difference]: Finished difference Result 1309 states and 2185 transitions. [2024-11-23 18:31:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:14,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-23 18:31:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:14,196 INFO L225 Difference]: With dead ends: 1309 [2024-11-23 18:31:14,196 INFO L226 Difference]: Without dead ends: 742 [2024-11-23 18:31:14,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:14,200 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 54 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:14,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2922 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-23 18:31:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2024-11-23 18:31:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 607 states have (on average 1.6902800658978583) internal successors, (1026), 627 states have internal predecessors, (1026), 102 states have call successors, (102), 30 states have call predecessors, (102), 32 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-23 18:31:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1231 transitions. [2024-11-23 18:31:14,237 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1231 transitions. Word has length 127 [2024-11-23 18:31:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:14,238 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1231 transitions. [2024-11-23 18:31:14,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1231 transitions. [2024-11-23 18:31:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 18:31:14,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:14,243 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:14,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:14,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:14,444 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:14,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1085130588, now seen corresponding path program 1 times [2024-11-23 18:31:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:14,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933106245] [2024-11-23 18:31:14,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 18:31:14,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933106245] [2024-11-23 18:31:14,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933106245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384464270] [2024-11-23 18:31:14,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:14,553 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:14,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 18:31:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:14,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:31:14,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 18:31:14,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384464270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-23 18:31:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541031812] [2024-11-23 18:31:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:14,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:31:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:14,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:31:14,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:14,991 INFO L87 Difference]: Start difference. First operand 742 states and 1231 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:16,365 INFO L93 Difference]: Finished difference Result 2444 states and 4140 transitions. [2024-11-23 18:31:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:31:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2024-11-23 18:31:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:16,381 INFO L225 Difference]: With dead ends: 2444 [2024-11-23 18:31:16,381 INFO L226 Difference]: Without dead ends: 1856 [2024-11-23 18:31:16,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:31:16,386 INFO L435 NwaCegarLoop]: 1107 mSDtfsCounter, 1801 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:16,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 3517 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:31:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2024-11-23 18:31:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1842. [2024-11-23 18:31:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1492 states have (on average 1.665549597855228) internal successors, (2485), 1540 states have internal predecessors, (2485), 271 states have call successors, (271), 78 states have call predecessors, (271), 78 states have return successors, (319), 262 states have call predecessors, (319), 266 states have call successors, (319) [2024-11-23 18:31:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 3075 transitions. [2024-11-23 18:31:16,486 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 3075 transitions. Word has length 127 [2024-11-23 18:31:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:16,487 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 3075 transitions. [2024-11-23 18:31:16,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 3075 transitions. [2024-11-23 18:31:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 18:31:16,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:16,494 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:16,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:16,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:16,695 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:16,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash -949510155, now seen corresponding path program 1 times [2024-11-23 18:31:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:16,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203358641] [2024-11-23 18:31:16,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203358641] [2024-11-23 18:31:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203358641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476158490] [2024-11-23 18:31:16,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:16,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:16,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:16,801 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:16,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 18:31:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:17,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:31:17,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 18:31:17,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476158490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:17,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:31:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138660640] [2024-11-23 18:31:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:17,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:17,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:17,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:17,283 INFO L87 Difference]: Start difference. First operand 1842 states and 3075 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:17,390 INFO L93 Difference]: Finished difference Result 3661 states and 6128 transitions. [2024-11-23 18:31:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-23 18:31:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:17,404 INFO L225 Difference]: With dead ends: 3661 [2024-11-23 18:31:17,404 INFO L226 Difference]: Without dead ends: 1807 [2024-11-23 18:31:17,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 18:31:17,417 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 7 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:17,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2878 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2024-11-23 18:31:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2024-11-23 18:31:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1460 states have (on average 1.6554794520547946) internal successors, (2417), 1506 states have internal predecessors, (2417), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-23 18:31:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3003 transitions. [2024-11-23 18:31:17,516 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3003 transitions. Word has length 127 [2024-11-23 18:31:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:17,516 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3003 transitions. [2024-11-23 18:31:17,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3003 transitions. [2024-11-23 18:31:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 18:31:17,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:17,522 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:17,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 18:31:17,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:17,723 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:17,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1946547836, now seen corresponding path program 1 times [2024-11-23 18:31:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181649214] [2024-11-23 18:31:17,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:17,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:17,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181649214] [2024-11-23 18:31:17,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181649214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:17,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235752864] [2024-11-23 18:31:17,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:17,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:17,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:17,912 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:17,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 18:31:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:18,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:31:18,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:31:18,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:31:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235752864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:18,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:31:18,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-23 18:31:18,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17103273] [2024-11-23 18:31:18,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:18,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:18,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:18,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:18,322 INFO L87 Difference]: Start difference. First operand 1807 states and 3003 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:18,476 INFO L93 Difference]: Finished difference Result 3629 states and 6028 transitions. [2024-11-23 18:31:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-11-23 18:31:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:18,490 INFO L225 Difference]: With dead ends: 3629 [2024-11-23 18:31:18,490 INFO L226 Difference]: Without dead ends: 1839 [2024-11-23 18:31:18,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 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 18:31:18,501 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 122 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5693 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:18,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5693 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2024-11-23 18:31:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1800. [2024-11-23 18:31:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1453 states have (on average 1.65244322092223) internal successors, (2401), 1499 states have internal predecessors, (2401), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-23 18:31:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2987 transitions. [2024-11-23 18:31:18,590 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2987 transitions. Word has length 128 [2024-11-23 18:31:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:18,590 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2987 transitions. [2024-11-23 18:31:18,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2987 transitions. [2024-11-23 18:31:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:31:18,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:18,596 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:18,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 18:31:18,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340ed683-04a8-4941-b309-0c5b51544b97/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 18:31:18,797 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:18,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 840282455, now seen corresponding path program 1 times [2024-11-23 18:31:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:18,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551210376] [2024-11-23 18:31:18,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:31:19,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:19,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551210376] [2024-11-23 18:31:19,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551210376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:19,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:31:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470807955] [2024-11-23 18:31:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:19,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:19,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:19,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:19,018 INFO L87 Difference]: Start difference. First operand 1800 states and 2987 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:19,171 INFO L93 Difference]: Finished difference Result 3533 states and 5876 transitions. [2024-11-23 18:31:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:31:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2024-11-23 18:31:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:19,184 INFO L225 Difference]: With dead ends: 3533 [2024-11-23 18:31:19,184 INFO L226 Difference]: Without dead ends: 1841 [2024-11-23 18:31:19,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:31:19,193 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 126 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5637 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:19,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5637 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:31:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-11-23 18:31:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1800. [2024-11-23 18:31:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1453 states have (on average 1.65244322092223) internal successors, (2401), 1499 states have internal predecessors, (2401), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-23 18:31:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2987 transitions. [2024-11-23 18:31:19,284 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2987 transitions. Word has length 129 [2024-11-23 18:31:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:19,285 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2987 transitions. [2024-11-23 18:31:19,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:31:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2987 transitions. [2024-11-23 18:31:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:31:19,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:19,291 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:19,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 18:31:19,291 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:19,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 91637367, now seen corresponding path program 1 times [2024-11-23 18:31:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:19,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860419190] [2024-11-23 18:31:19,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:31:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:19,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860419190] [2024-11-23 18:31:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860419190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:19,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812272446] [2024-11-23 18:31:19,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:19,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:19,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:19,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:19,410 INFO L87 Difference]: Start difference. First operand 1800 states and 2987 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:19,509 INFO L93 Difference]: Finished difference Result 3555 states and 5917 transitions. [2024-11-23 18:31:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:31:19,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-23 18:31:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:19,523 INFO L225 Difference]: With dead ends: 3555 [2024-11-23 18:31:19,523 INFO L226 Difference]: Without dead ends: 1758 [2024-11-23 18:31:19,530 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 18:31:19,531 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 8 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:19,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2877 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:31:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2024-11-23 18:31:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1758. [2024-11-23 18:31:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1414 states have (on average 1.6463932107496464) internal successors, (2328), 1458 states have internal predecessors, (2328), 269 states have call successors, (269), 78 states have call predecessors, (269), 74 states have return successors, (313), 260 states have call predecessors, (313), 264 states have call successors, (313) [2024-11-23 18:31:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2910 transitions. [2024-11-23 18:31:19,604 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2910 transitions. Word has length 129 [2024-11-23 18:31:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:19,604 INFO L471 AbstractCegarLoop]: Abstraction has 1758 states and 2910 transitions. [2024-11-23 18:31:19,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:31:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2910 transitions. [2024-11-23 18:31:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 18:31:19,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:19,609 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:19,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 18:31:19,609 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:19,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1826221808, now seen corresponding path program 1 times [2024-11-23 18:31:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453761511] [2024-11-23 18:31:19,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:19,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453761511] [2024-11-23 18:31:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453761511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:19,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:19,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143751920] [2024-11-23 18:31:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:19,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:19,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:19,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:19,750 INFO L87 Difference]: Start difference. First operand 1758 states and 2910 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:20,894 INFO L93 Difference]: Finished difference Result 5072 states and 8628 transitions. [2024-11-23 18:31:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2024-11-23 18:31:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:20,920 INFO L225 Difference]: With dead ends: 5072 [2024-11-23 18:31:20,921 INFO L226 Difference]: Without dead ends: 3384 [2024-11-23 18:31:20,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:31:20,934 INFO L435 NwaCegarLoop]: 1878 mSDtfsCounter, 1855 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:20,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 3354 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:31:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-11-23 18:31:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3378. [2024-11-23 18:31:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2718 states have (on average 1.6383370125091978) internal successors, (4453), 2804 states have internal predecessors, (4453), 516 states have call successors, (516), 150 states have call predecessors, (516), 143 states have return successors, (658), 501 states have call predecessors, (658), 508 states have call successors, (658) [2024-11-23 18:31:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5627 transitions. [2024-11-23 18:31:21,167 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5627 transitions. Word has length 130 [2024-11-23 18:31:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:21,168 INFO L471 AbstractCegarLoop]: Abstraction has 3378 states and 5627 transitions. [2024-11-23 18:31:21,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5627 transitions. [2024-11-23 18:31:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:31:21,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:21,172 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:21,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 18:31:21,172 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:21,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash 709165645, now seen corresponding path program 1 times [2024-11-23 18:31:21,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491969637] [2024-11-23 18:31:21,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491969637] [2024-11-23 18:31:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491969637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784553226] [2024-11-23 18:31:21,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:21,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:21,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:21,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:21,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:21,310 INFO L87 Difference]: Start difference. First operand 3378 states and 5627 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:22,570 INFO L93 Difference]: Finished difference Result 9947 states and 17017 transitions. [2024-11-23 18:31:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2024-11-23 18:31:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:22,620 INFO L225 Difference]: With dead ends: 9947 [2024-11-23 18:31:22,620 INFO L226 Difference]: Without dead ends: 6639 [2024-11-23 18:31:22,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:31:22,646 INFO L435 NwaCegarLoop]: 1887 mSDtfsCounter, 1864 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:22,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 3370 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:31:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2024-11-23 18:31:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6631. [2024-11-23 18:31:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 5336 states have (on average 1.6300599700149925) internal successors, (8698), 5506 states have internal predecessors, (8698), 1013 states have call successors, (1013), 294 states have call predecessors, (1013), 281 states have return successors, (1423), 986 states have call predecessors, (1423), 999 states have call successors, (1423) [2024-11-23 18:31:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 11134 transitions. [2024-11-23 18:31:23,050 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 11134 transitions. Word has length 131 [2024-11-23 18:31:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:23,051 INFO L471 AbstractCegarLoop]: Abstraction has 6631 states and 11134 transitions. [2024-11-23 18:31:23,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 11134 transitions. [2024-11-23 18:31:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 18:31:23,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:23,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:23,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 18:31:23,055 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:23,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash -762537685, now seen corresponding path program 1 times [2024-11-23 18:31:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:23,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039094046] [2024-11-23 18:31:23,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039094046] [2024-11-23 18:31:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039094046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917789234] [2024-11-23 18:31:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:23,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:23,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:23,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:23,209 INFO L87 Difference]: Start difference. First operand 6631 states and 11134 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:24,724 INFO L93 Difference]: Finished difference Result 19721 states and 34293 transitions. [2024-11-23 18:31:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:24,724 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2024-11-23 18:31:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:24,822 INFO L225 Difference]: With dead ends: 19721 [2024-11-23 18:31:24,822 INFO L226 Difference]: Without dead ends: 13160 [2024-11-23 18:31:24,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:31:24,884 INFO L435 NwaCegarLoop]: 1896 mSDtfsCounter, 1873 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:24,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 3386 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:31:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13160 states. [2024-11-23 18:31:25,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13160 to 13152. [2024-11-23 18:31:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 10584 states have (on average 1.621031746031746) internal successors, (17157), 10922 states have internal predecessors, (17157), 2010 states have call successors, (2010), 582 states have call predecessors, (2010), 557 states have return successors, (3208), 1959 states have call predecessors, (3208), 1984 states have call successors, (3208) [2024-11-23 18:31:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 22375 transitions. [2024-11-23 18:31:25,743 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 22375 transitions. Word has length 132 [2024-11-23 18:31:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:25,744 INFO L471 AbstractCegarLoop]: Abstraction has 13152 states and 22375 transitions. [2024-11-23 18:31:25,744 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 22375 transitions. [2024-11-23 18:31:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:31:25,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:25,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:25,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 18:31:25,751 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:25,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -343401304, now seen corresponding path program 1 times [2024-11-23 18:31:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394331260] [2024-11-23 18:31:25,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:25,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394331260] [2024-11-23 18:31:25,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394331260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:25,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:25,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731443825] [2024-11-23 18:31:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:25,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:25,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:25,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:25,899 INFO L87 Difference]: Start difference. First operand 13152 states and 22375 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:28,396 INFO L93 Difference]: Finished difference Result 39299 states and 70299 transitions. [2024-11-23 18:31:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:28,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2024-11-23 18:31:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:28,572 INFO L225 Difference]: With dead ends: 39299 [2024-11-23 18:31:28,572 INFO L226 Difference]: Without dead ends: 26217 [2024-11-23 18:31:28,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:31:28,718 INFO L435 NwaCegarLoop]: 1905 mSDtfsCounter, 1882 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:28,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 3402 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:31:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26217 states. [2024-11-23 18:31:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26217 to 26213. [2024-11-23 18:31:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26213 states, 21096 states have (on average 1.611490329920364) internal successors, (33996), 21770 states have internal predecessors, (33996), 4007 states have call successors, (4007), 1158 states have call predecessors, (4007), 1109 states have return successors, (7717), 3908 states have call predecessors, (7717), 3957 states have call successors, (7717) [2024-11-23 18:31:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26213 states to 26213 states and 45720 transitions. [2024-11-23 18:31:30,420 INFO L78 Accepts]: Start accepts. Automaton has 26213 states and 45720 transitions. Word has length 133 [2024-11-23 18:31:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:30,421 INFO L471 AbstractCegarLoop]: Abstraction has 26213 states and 45720 transitions. [2024-11-23 18:31:30,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26213 states and 45720 transitions. [2024-11-23 18:31:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:31:30,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:30,428 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:30,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 18:31:30,428 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:30,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1437776026, now seen corresponding path program 1 times [2024-11-23 18:31:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731349335] [2024-11-23 18:31:30,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731349335] [2024-11-23 18:31:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731349335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:31:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903477732] [2024-11-23 18:31:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:30,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:31:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:30,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:31:30,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:31:30,789 INFO L87 Difference]: Start difference. First operand 26213 states and 45720 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:34,876 INFO L93 Difference]: Finished difference Result 78497 states and 148329 transitions. [2024-11-23 18:31:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:31:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-23 18:31:34,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:35,264 INFO L225 Difference]: With dead ends: 78497 [2024-11-23 18:31:35,264 INFO L226 Difference]: Without dead ends: 52354 [2024-11-23 18:31:35,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:31:35,925 INFO L435 NwaCegarLoop]: 1914 mSDtfsCounter, 1891 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:35,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 3418 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:31:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52354 states. [2024-11-23 18:31:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52354 to 52350. [2024-11-23 18:31:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52350 states, 42132 states have (on average 1.601799107566695) internal successors, (67487), 43478 states have internal predecessors, (67487), 8004 states have call successors, (8004), 2310 states have call predecessors, (8004), 2213 states have return successors, (20338), 7809 states have call predecessors, (20338), 7906 states have call successors, (20338) [2024-11-23 18:31:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52350 states to 52350 states and 95829 transitions. [2024-11-23 18:31:40,031 INFO L78 Accepts]: Start accepts. Automaton has 52350 states and 95829 transitions. Word has length 134 [2024-11-23 18:31:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:40,032 INFO L471 AbstractCegarLoop]: Abstraction has 52350 states and 95829 transitions. [2024-11-23 18:31:40,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 52350 states and 95829 transitions. [2024-11-23 18:31:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:31:40,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:40,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:40,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 18:31:40,036 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:40,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1918856284, now seen corresponding path program 1 times [2024-11-23 18:31:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:40,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806096971] [2024-11-23 18:31:40,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806096971] [2024-11-23 18:31:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806096971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:40,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:31:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72262228] [2024-11-23 18:31:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:40,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:40,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:40,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:40,237 INFO L87 Difference]: Start difference. First operand 52350 states and 95829 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:46,442 INFO L93 Difference]: Finished difference Result 141575 states and 257961 transitions. [2024-11-23 18:31:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 18:31:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-23 18:31:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:47,065 INFO L225 Difference]: With dead ends: 141575 [2024-11-23 18:31:47,065 INFO L226 Difference]: Without dead ends: 89326 [2024-11-23 18:31:48,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:31:48,308 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 1107 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 6143 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:48,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 6143 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:31:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89326 states. [2024-11-23 18:31:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89326 to 88138. [2024-11-23 18:31:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88138 states, 70939 states have (on average 1.5907046899448822) internal successors, (112843), 72989 states have internal predecessors, (112843), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 3912 states have return successors, (32555), 13378 states have call predecessors, (32555), 13155 states have call successors, (32555) [2024-11-23 18:31:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88138 states to 88138 states and 158684 transitions. [2024-11-23 18:31:54,625 INFO L78 Accepts]: Start accepts. Automaton has 88138 states and 158684 transitions. Word has length 134 [2024-11-23 18:31:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:54,625 INFO L471 AbstractCegarLoop]: Abstraction has 88138 states and 158684 transitions. [2024-11-23 18:31:54,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:31:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 88138 states and 158684 transitions. [2024-11-23 18:31:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:31:54,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:54,633 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:54,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 18:31:54,633 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:54,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:54,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1111766359, now seen corresponding path program 1 times [2024-11-23 18:31:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:54,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157357730] [2024-11-23 18:31:54,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:31:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:31:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:31:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:54,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157357730] [2024-11-23 18:31:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157357730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:31:54,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:31:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:31:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427555158] [2024-11-23 18:31:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:31:54,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:54,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:54,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:54,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:54,904 INFO L87 Difference]: Start difference. First operand 88138 states and 158684 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:32:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:01,686 INFO L93 Difference]: Finished difference Result 163926 states and 294400 transitions. [2024-11-23 18:32:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:32:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2024-11-23 18:32:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:02,137 INFO L225 Difference]: With dead ends: 163926 [2024-11-23 18:32:02,137 INFO L226 Difference]: Without dead ends: 89866 [2024-11-23 18:32:03,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 18:32:03,291 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 0 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:03,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5788 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:32:03,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89866 states.