./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/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 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:55:56,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:55:56,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:55:56,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:55:56,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:55:56,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:55:56,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:55:56,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:55:56,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:55:56,971 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:55:56,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:55:56,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:55:56,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:55:56,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:55:56,973 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:55:56,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:55:56,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:55:56,975 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:55:56,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:55:56,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:55:56,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:55:56,976 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:55:56,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:55:56,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:55:56,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:55:56,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:55:56,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:55:56,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:55:56,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:55:56,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:55:56,978 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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/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 -> 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 [2024-11-23 23:55:57,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:55:57,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:55:57,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:55:57,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:55:57,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:55:57,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-11-23 23:56:00,338 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/data/5382ea76c/4225db3736554ac5bf6dd264f0174f0d/FLAG5c181ee54 [2024-11-23 23:56:00,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:56:00,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-11-23 23:56:00,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/data/5382ea76c/4225db3736554ac5bf6dd264f0174f0d/FLAG5c181ee54 [2024-11-23 23:56:00,795 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/data/5382ea76c/4225db3736554ac5bf6dd264f0174f0d [2024-11-23 23:56:00,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:56:00,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:56:00,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:00,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:56:00,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:56:00,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:00" (1/1) ... [2024-11-23 23:56:00,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a881931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:00, skipping insertion in model container [2024-11-23 23:56:00,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:00" (1/1) ... [2024-11-23 23:56:00,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:56:01,435 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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2024-11-23 23:56:01,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:01,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:56:01,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-23 23:56:01,589 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-11-23 23:56:01,590 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [754] [2024-11-23 23:56:01,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1120] [2024-11-23 23:56:01,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1220] [2024-11-23 23:56:01,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1340] [2024-11-23 23:56:01,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1358] [2024-11-23 23:56:01,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1548] [2024-11-23 23:56:01,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1897] [2024-11-23 23:56:01,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1906] [2024-11-23 23:56:01,720 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_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2024-11-23 23:56:01,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:01,849 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:56:01,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01 WrapperNode [2024-11-23 23:56:01,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:01,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:01,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:56:01,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:56:01,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,926 INFO L138 Inliner]: procedures = 91, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 926 [2024-11-23 23:56:01,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:01,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:56:01,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:56:01,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:56:01,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,995 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 23:56:01,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:01,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,017 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:56:02,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:56:02,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:56:02,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:56:02,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (1/1) ... [2024-11-23 23:56:02,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:02,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:56:02,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:56:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:56:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-23 23:56:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-23 23:56:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 23:56:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 23:56:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 23:56:02,175 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 23:56:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 23:56:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 23:56:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-23 23:56:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-23 23:56:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 23:56:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 23:56:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 23:56:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 23:56:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 23:56:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 23:56:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 23:56:02,179 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 23:56:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 23:56:02,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 23:56:02,181 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 23:56:02,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 23:56:02,181 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 23:56:02,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 23:56:02,181 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 23:56:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 23:56:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 23:56:02,183 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 23:56:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:56:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 23:56:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 23:56:02,465 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:56:02,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:56:04,379 INFO L? ?]: Removed 470 outVars from TransFormulas that were not future-live. [2024-11-23 23:56:04,380 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:56:04,428 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:56:04,428 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:56:04,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:04 BoogieIcfgContainer [2024-11-23 23:56:04,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:56:04,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:56:04,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:56:04,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:56:04,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:56:00" (1/3) ... [2024-11-23 23:56:04,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dafaa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:04, skipping insertion in model container [2024-11-23 23:56:04,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:01" (2/3) ... [2024-11-23 23:56:04,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dafaa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:04, skipping insertion in model container [2024-11-23 23:56:04,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:04" (3/3) ... [2024-11-23 23:56:04,447 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2024-11-23 23:56:04,467 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:56:04,470 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product29.cil.c that has 27 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:56:04,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:56:04,587 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;@516e2fb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:56:04,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:56:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6796536796536796) internal successors, (776), 480 states have internal predecessors, (776), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-23 23:56:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:56:04,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:04,641 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:04,642 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:04,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1198628252, now seen corresponding path program 1 times [2024-11-23 23:56:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:04,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660715204] [2024-11-23 23:56:04,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:05,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660715204] [2024-11-23 23:56:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660715204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:05,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:05,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:56:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319180715] [2024-11-23 23:56:05,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:05,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:06,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:06,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:56:06,015 INFO L87 Difference]: Start difference. First operand has 596 states, 462 states have (on average 1.6796536796536796) internal successors, (776), 480 states have internal predecessors, (776), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:06,420 INFO L93 Difference]: Finished difference Result 1189 states and 1988 transitions. [2024-11-23 23:56:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2024-11-23 23:56:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:06,450 INFO L225 Difference]: With dead ends: 1189 [2024-11-23 23:56:06,450 INFO L226 Difference]: Without dead ends: 601 [2024-11-23 23:56:06,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:56:06,471 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 91 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:06,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5735 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-23 23:56:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2024-11-23 23:56:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 483 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-23 23:56:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 990 transitions. [2024-11-23 23:56:06,613 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 990 transitions. Word has length 99 [2024-11-23 23:56:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:06,614 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 990 transitions. [2024-11-23 23:56:06,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 990 transitions. [2024-11-23 23:56:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 23:56:06,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:06,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:06,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:56:06,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:06,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2083760280, now seen corresponding path program 1 times [2024-11-23 23:56:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:06,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035601613] [2024-11-23 23:56:06,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:07,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035601613] [2024-11-23 23:56:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035601613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:07,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:07,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:56:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406341934] [2024-11-23 23:56:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:07,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:07,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:07,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:56:07,187 INFO L87 Difference]: Start difference. First operand 599 states and 990 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:07,411 INFO L93 Difference]: Finished difference Result 1193 states and 1983 transitions. [2024-11-23 23:56:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2024-11-23 23:56:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:07,423 INFO L225 Difference]: With dead ends: 1193 [2024-11-23 23:56:07,424 INFO L226 Difference]: Without dead ends: 610 [2024-11-23 23:56:07,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:56:07,433 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 90 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:07,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5736 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-23 23:56:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 599. [2024-11-23 23:56:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 483 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-23 23:56:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 990 transitions. [2024-11-23 23:56:07,515 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 990 transitions. Word has length 100 [2024-11-23 23:56:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:07,516 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 990 transitions. [2024-11-23 23:56:07,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 990 transitions. [2024-11-23 23:56:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 23:56:07,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:07,529 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:07,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:56:07,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:07,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1188009300, now seen corresponding path program 1 times [2024-11-23 23:56:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581307583] [2024-11-23 23:56:07,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:07,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581307583] [2024-11-23 23:56:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581307583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:07,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:07,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:07,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073096571] [2024-11-23 23:56:07,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:07,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:07,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:07,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:07,829 INFO L87 Difference]: Start difference. First operand 599 states and 990 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:07,948 INFO L93 Difference]: Finished difference Result 1180 states and 1961 transitions. [2024-11-23 23:56:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:07,949 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 23:56:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:07,955 INFO L225 Difference]: With dead ends: 1180 [2024-11-23 23:56:07,958 INFO L226 Difference]: Without dead ends: 569 [2024-11-23 23:56:07,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:07,962 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 14 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:07,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2875 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-23 23:56:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-23 23:56:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6552511415525115) internal successors, (725), 454 states have internal predecessors, (725), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 934 transitions. [2024-11-23 23:56:08,008 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 934 transitions. Word has length 100 [2024-11-23 23:56:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:08,009 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 934 transitions. [2024-11-23 23:56:08,009 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 934 transitions. [2024-11-23 23:56:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 23:56:08,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:08,016 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:08,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:56:08,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:08,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -797617344, now seen corresponding path program 1 times [2024-11-23 23:56:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752547872] [2024-11-23 23:56:08,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752547872] [2024-11-23 23:56:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752547872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:08,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:08,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:56:08,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678135268] [2024-11-23 23:56:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:08,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:08,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:08,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:56:08,434 INFO L87 Difference]: Start difference. First operand 569 states and 934 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:08,553 INFO L93 Difference]: Finished difference Result 1131 states and 1867 transitions. [2024-11-23 23:56:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:08,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-11-23 23:56:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:08,563 INFO L225 Difference]: With dead ends: 1131 [2024-11-23 23:56:08,564 INFO L226 Difference]: Without dead ends: 563 [2024-11-23 23:56:08,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:56:08,571 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 63 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:08,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5486 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-23 23:56:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2024-11-23 23:56:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 432 states have (on average 1.6481481481481481) internal successors, (712), 448 states have internal predecessors, (712), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 921 transitions. [2024-11-23 23:56:08,605 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 921 transitions. Word has length 101 [2024-11-23 23:56:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:08,605 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 921 transitions. [2024-11-23 23:56:08,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 921 transitions. [2024-11-23 23:56:08,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:56:08,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:08,609 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:08,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:56:08,610 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:08,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash 379080332, now seen corresponding path program 1 times [2024-11-23 23:56:08,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:08,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305803418] [2024-11-23 23:56:08,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:08,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:08,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305803418] [2024-11-23 23:56:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305803418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:08,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:08,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:56:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40908046] [2024-11-23 23:56:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:08,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:08,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:08,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:56:08,924 INFO L87 Difference]: Start difference. First operand 563 states and 921 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:09,054 INFO L93 Difference]: Finished difference Result 1119 states and 1841 transitions. [2024-11-23 23:56:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-11-23 23:56:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:09,061 INFO L225 Difference]: With dead ends: 1119 [2024-11-23 23:56:09,061 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:09,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:56:09,067 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 49 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:09,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5426 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 442 states have internal predecessors, (699), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 908 transitions. [2024-11-23 23:56:09,108 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 908 transitions. Word has length 102 [2024-11-23 23:56:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:09,108 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 908 transitions. [2024-11-23 23:56:09,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 908 transitions. [2024-11-23 23:56:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:56:09,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:09,112 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:09,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:56:09,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:09,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -801506867, now seen corresponding path program 1 times [2024-11-23 23:56:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098132275] [2024-11-23 23:56:09,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098132275] [2024-11-23 23:56:09,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098132275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:09,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:56:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700168039] [2024-11-23 23:56:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:09,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:09,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:09,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:56:09,404 INFO L87 Difference]: Start difference. First operand 557 states and 908 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:09,499 INFO L93 Difference]: Finished difference Result 1107 states and 1815 transitions. [2024-11-23 23:56:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-11-23 23:56:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:09,508 INFO L225 Difference]: With dead ends: 1107 [2024-11-23 23:56:09,508 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:09,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:56:09,512 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 24 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5378 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:09,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5378 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6384976525821595) internal successors, (698), 442 states have internal predecessors, (698), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 907 transitions. [2024-11-23 23:56:09,550 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 907 transitions. Word has length 102 [2024-11-23 23:56:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:09,551 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 907 transitions. [2024-11-23 23:56:09,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:56:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 907 transitions. [2024-11-23 23:56:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:56:09,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:09,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:09,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:56:09,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:09,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1837025052, now seen corresponding path program 1 times [2024-11-23 23:56:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387375650] [2024-11-23 23:56:09,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387375650] [2024-11-23 23:56:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387375650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:09,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:09,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286273690] [2024-11-23 23:56:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:09,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:09,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:09,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:09,756 INFO L87 Difference]: Start difference. First operand 557 states and 907 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:09,837 INFO L93 Difference]: Finished difference Result 1098 states and 1800 transitions. [2024-11-23 23:56:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-11-23 23:56:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:09,843 INFO L225 Difference]: With dead ends: 1098 [2024-11-23 23:56:09,843 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:09,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:09,847 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 15 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:09,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2661 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.636150234741784) internal successors, (697), 442 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 906 transitions. [2024-11-23 23:56:09,880 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 906 transitions. Word has length 103 [2024-11-23 23:56:09,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:09,880 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 906 transitions. [2024-11-23 23:56:09,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 906 transitions. [2024-11-23 23:56:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:56:09,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:09,884 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:09,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:56:09,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:09,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:09,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1585373804, now seen corresponding path program 1 times [2024-11-23 23:56:09,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130256766] [2024-11-23 23:56:09,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:09,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:10,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:10,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130256766] [2024-11-23 23:56:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130256766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112822484] [2024-11-23 23:56:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:10,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:10,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:10,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,073 INFO L87 Difference]: Start difference. First operand 557 states and 906 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:10,158 INFO L93 Difference]: Finished difference Result 1098 states and 1798 transitions. [2024-11-23 23:56:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-11-23 23:56:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:10,164 INFO L225 Difference]: With dead ends: 1098 [2024-11-23 23:56:10,164 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:10,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,169 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 14 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:10,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2663 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6338028169014085) internal successors, (696), 442 states have internal predecessors, (696), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 905 transitions. [2024-11-23 23:56:10,210 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 905 transitions. Word has length 104 [2024-11-23 23:56:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:10,210 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 905 transitions. [2024-11-23 23:56:10,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 905 transitions. [2024-11-23 23:56:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:56:10,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:10,215 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:10,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:56:10,216 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:10,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2112820695, now seen corresponding path program 1 times [2024-11-23 23:56:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910227724] [2024-11-23 23:56:10,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910227724] [2024-11-23 23:56:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910227724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:10,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84472] [2024-11-23 23:56:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:10,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:10,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:10,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,422 INFO L87 Difference]: Start difference. First operand 557 states and 905 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:10,490 INFO L93 Difference]: Finished difference Result 1098 states and 1796 transitions. [2024-11-23 23:56:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-11-23 23:56:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:10,496 INFO L225 Difference]: With dead ends: 1098 [2024-11-23 23:56:10,496 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:10,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,500 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 13 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:10,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2665 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6314553990610328) internal successors, (695), 442 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 904 transitions. [2024-11-23 23:56:10,531 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 904 transitions. Word has length 105 [2024-11-23 23:56:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:10,532 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 904 transitions. [2024-11-23 23:56:10,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 904 transitions. [2024-11-23 23:56:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:56:10,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:10,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:10,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:56:10,537 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:10,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1083857489, now seen corresponding path program 1 times [2024-11-23 23:56:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441666191] [2024-11-23 23:56:10,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:10,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441666191] [2024-11-23 23:56:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441666191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:10,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:10,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:10,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920544685] [2024-11-23 23:56:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:10,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:10,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:10,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,719 INFO L87 Difference]: Start difference. First operand 557 states and 904 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:10,791 INFO L93 Difference]: Finished difference Result 1098 states and 1794 transitions. [2024-11-23 23:56:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:10,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-23 23:56:10,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:10,796 INFO L225 Difference]: With dead ends: 1098 [2024-11-23 23:56:10,796 INFO L226 Difference]: Without dead ends: 557 [2024-11-23 23:56:10,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:10,801 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 12 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:10,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2667 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-23 23:56:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-23 23:56:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 426 states have (on average 1.6291079812206573) internal successors, (694), 442 states have internal predecessors, (694), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:56:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 903 transitions. [2024-11-23 23:56:10,832 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 903 transitions. Word has length 106 [2024-11-23 23:56:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:10,832 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 903 transitions. [2024-11-23 23:56:10,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:56:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 903 transitions. [2024-11-23 23:56:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:56:10,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:10,836 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:10,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:56:10,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:10,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1021743250, now seen corresponding path program 1 times [2024-11-23 23:56:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299296094] [2024-11-23 23:56:10,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299296094] [2024-11-23 23:56:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299296094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:11,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:56:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109447939] [2024-11-23 23:56:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:11,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:11,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:11,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:11,144 INFO L87 Difference]: Start difference. First operand 557 states and 903 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 23:56:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:12,098 INFO L93 Difference]: Finished difference Result 1580 states and 2591 transitions. [2024-11-23 23:56:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:56:12,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2024-11-23 23:56:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:12,107 INFO L225 Difference]: With dead ends: 1580 [2024-11-23 23:56:12,107 INFO L226 Difference]: Without dead ends: 1041 [2024-11-23 23:56:12,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:12,112 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 767 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 4392 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:12,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 4392 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:56:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-11-23 23:56:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1033. [2024-11-23 23:56:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 793 states have (on average 1.5952080706179066) internal successors, (1265), 823 states have internal predecessors, (1265), 194 states have call successors, (194), 49 states have call predecessors, (194), 45 states have return successors, (195), 185 states have call predecessors, (195), 190 states have call successors, (195) [2024-11-23 23:56:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1654 transitions. [2024-11-23 23:56:12,172 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1654 transitions. Word has length 107 [2024-11-23 23:56:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:12,173 INFO L471 AbstractCegarLoop]: Abstraction has 1033 states and 1654 transitions. [2024-11-23 23:56:12,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 23:56:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1654 transitions. [2024-11-23 23:56:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:56:12,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:12,177 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:12,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:56:12,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:12,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:12,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1722829882, now seen corresponding path program 1 times [2024-11-23 23:56:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:12,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984882514] [2024-11-23 23:56:12,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:56:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984882514] [2024-11-23 23:56:12,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984882514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726073511] [2024-11-23 23:56:12,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:12,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:12,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:56:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:13,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:56:13,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:13,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:13,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726073511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:13,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:13,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-23 23:56:13,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415692798] [2024-11-23 23:56:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:13,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:13,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:13,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:13,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:13,209 INFO L87 Difference]: Start difference. First operand 1033 states and 1654 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 23:56:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:13,371 INFO L93 Difference]: Finished difference Result 2977 states and 4834 transitions. [2024-11-23 23:56:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 112 [2024-11-23 23:56:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:13,388 INFO L225 Difference]: With dead ends: 2977 [2024-11-23 23:56:13,388 INFO L226 Difference]: Without dead ends: 1962 [2024-11-23 23:56:13,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:13,398 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 826 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:13,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1770 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-11-23 23:56:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1901. [2024-11-23 23:56:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1468 states have (on average 1.6137602179836512) internal successors, (2369), 1528 states have internal predecessors, (2369), 347 states have call successors, (347), 88 states have call predecessors, (347), 85 states have return successors, (362), 334 states have call predecessors, (362), 343 states have call successors, (362) [2024-11-23 23:56:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 3078 transitions. [2024-11-23 23:56:13,556 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 3078 transitions. Word has length 112 [2024-11-23 23:56:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:13,557 INFO L471 AbstractCegarLoop]: Abstraction has 1901 states and 3078 transitions. [2024-11-23 23:56:13,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 23:56:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 3078 transitions. [2024-11-23 23:56:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 23:56:13,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:13,563 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:13,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:56:13,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:56:13,768 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:13,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1932639380, now seen corresponding path program 1 times [2024-11-23 23:56:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:13,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826151446] [2024-11-23 23:56:13,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:13,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:56:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826151446] [2024-11-23 23:56:14,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826151446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998151097] [2024-11-23 23:56:14,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:14,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:14,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:14,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:56:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:14,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:56:14,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:14,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998151097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-23 23:56:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170361165] [2024-11-23 23:56:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:14,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:14,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:14,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:14,702 INFO L87 Difference]: Start difference. First operand 1901 states and 3078 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 23:56:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:14,860 INFO L93 Difference]: Finished difference Result 4266 states and 6945 transitions. [2024-11-23 23:56:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 114 [2024-11-23 23:56:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:14,881 INFO L225 Difference]: With dead ends: 4266 [2024-11-23 23:56:14,881 INFO L226 Difference]: Without dead ends: 2383 [2024-11-23 23:56:14,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:14,894 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 826 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:14,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1697 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2024-11-23 23:56:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2336. [2024-11-23 23:56:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1807 states have (on average 1.6258992805755397) internal successors, (2938), 1882 states have internal predecessors, (2938), 424 states have call successors, (424), 106 states have call predecessors, (424), 104 states have return successors, (443), 410 states have call predecessors, (443), 420 states have call successors, (443) [2024-11-23 23:56:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3805 transitions. [2024-11-23 23:56:15,072 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3805 transitions. Word has length 114 [2024-11-23 23:56:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:15,073 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 3805 transitions. [2024-11-23 23:56:15,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 23:56:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3805 transitions. [2024-11-23 23:56:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:56:15,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:15,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:15,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:15,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:56:15,282 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:15,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1275730305, now seen corresponding path program 1 times [2024-11-23 23:56:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433207965] [2024-11-23 23:56:15,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433207965] [2024-11-23 23:56:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433207965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:15,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:56:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322458997] [2024-11-23 23:56:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:15,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:15,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:15,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:15,547 INFO L87 Difference]: Start difference. First operand 2336 states and 3805 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:56:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:16,462 INFO L93 Difference]: Finished difference Result 6904 states and 11475 transitions. [2024-11-23 23:56:16,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:56:16,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-23 23:56:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:16,504 INFO L225 Difference]: With dead ends: 6904 [2024-11-23 23:56:16,504 INFO L226 Difference]: Without dead ends: 4586 [2024-11-23 23:56:16,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:16,521 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 898 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:16,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 4655 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:56:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2024-11-23 23:56:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4533. [2024-11-23 23:56:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 3509 states have (on average 1.6221145625534341) internal successors, (5692), 3654 states have internal predecessors, (5692), 818 states have call successors, (818), 206 states have call predecessors, (818), 205 states have return successors, (1003), 798 states have call predecessors, (1003), 812 states have call successors, (1003) [2024-11-23 23:56:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 7513 transitions. [2024-11-23 23:56:16,869 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 7513 transitions. Word has length 116 [2024-11-23 23:56:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:16,871 INFO L471 AbstractCegarLoop]: Abstraction has 4533 states and 7513 transitions. [2024-11-23 23:56:16,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:56:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 7513 transitions. [2024-11-23 23:56:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:56:16,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:16,878 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:16,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:56:16,878 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:16,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 286460798, now seen corresponding path program 1 times [2024-11-23 23:56:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862358668] [2024-11-23 23:56:16,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:17,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862358668] [2024-11-23 23:56:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862358668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:17,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062694939] [2024-11-23 23:56:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:17,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:17,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:17,067 INFO L87 Difference]: Start difference. First operand 4533 states and 7513 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:56:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:17,560 INFO L93 Difference]: Finished difference Result 9072 states and 15169 transitions. [2024-11-23 23:56:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-11-23 23:56:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:17,602 INFO L225 Difference]: With dead ends: 9072 [2024-11-23 23:56:17,602 INFO L226 Difference]: Without dead ends: 4557 [2024-11-23 23:56:17,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:17,648 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 12 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:17,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2631 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2024-11-23 23:56:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4541. [2024-11-23 23:56:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3515 states have (on average 1.6204836415362731) internal successors, (5696), 3660 states have internal predecessors, (5696), 818 states have call successors, (818), 210 states have call predecessors, (818), 207 states have return successors, (993), 796 states have call predecessors, (993), 812 states have call successors, (993) [2024-11-23 23:56:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 7507 transitions. [2024-11-23 23:56:18,022 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 7507 transitions. Word has length 118 [2024-11-23 23:56:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:18,022 INFO L471 AbstractCegarLoop]: Abstraction has 4541 states and 7507 transitions. [2024-11-23 23:56:18,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:56:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 7507 transitions. [2024-11-23 23:56:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:56:18,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:18,037 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:18,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:56:18,037 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:18,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash 8133960, now seen corresponding path program 1 times [2024-11-23 23:56:18,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:18,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362077299] [2024-11-23 23:56:18,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:18,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:56:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362077299] [2024-11-23 23:56:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362077299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:18,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:18,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:56:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181404996] [2024-11-23 23:56:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:18,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:18,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:18,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:18,283 INFO L87 Difference]: Start difference. First operand 4541 states and 7507 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:56:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:19,435 INFO L93 Difference]: Finished difference Result 13568 states and 23019 transitions. [2024-11-23 23:56:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:56:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2024-11-23 23:56:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:19,517 INFO L225 Difference]: With dead ends: 13568 [2024-11-23 23:56:19,517 INFO L226 Difference]: Without dead ends: 9045 [2024-11-23 23:56:19,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:19,551 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 893 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4506 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:19,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4506 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:56:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2024-11-23 23:56:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 8976. [2024-11-23 23:56:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 6951 states have (on average 1.6171773845489859) internal successors, (11241), 7236 states have internal predecessors, (11241), 1611 states have call successors, (1611), 414 states have call predecessors, (1611), 413 states have return successors, (2318), 1577 states have call predecessors, (2318), 1601 states have call successors, (2318) [2024-11-23 23:56:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 15170 transitions. [2024-11-23 23:56:20,280 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 15170 transitions. Word has length 126 [2024-11-23 23:56:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:20,281 INFO L471 AbstractCegarLoop]: Abstraction has 8976 states and 15170 transitions. [2024-11-23 23:56:20,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:56:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 15170 transitions. [2024-11-23 23:56:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 23:56:20,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:20,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:20,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:56:20,290 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:20,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash 451167542, now seen corresponding path program 1 times [2024-11-23 23:56:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981719373] [2024-11-23 23:56:20,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:20,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:56:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981719373] [2024-11-23 23:56:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981719373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:20,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113049534] [2024-11-23 23:56:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:20,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:20,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:20,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:20,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:20,542 INFO L87 Difference]: Start difference. First operand 8976 states and 15170 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:56:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:21,395 INFO L93 Difference]: Finished difference Result 18006 states and 30825 transitions. [2024-11-23 23:56:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-23 23:56:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:21,496 INFO L225 Difference]: With dead ends: 18006 [2024-11-23 23:56:21,496 INFO L226 Difference]: Without dead ends: 9048 [2024-11-23 23:56:21,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:21,671 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 12 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:21,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2622 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2024-11-23 23:56:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 9016. [2024-11-23 23:56:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 6987 states have (on average 1.6145699155574638) internal successors, (11281), 7264 states have internal predecessors, (11281), 1611 states have call successors, (1611), 430 states have call predecessors, (1611), 417 states have return successors, (2304), 1573 states have call predecessors, (2304), 1601 states have call successors, (2304) [2024-11-23 23:56:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 15196 transitions. [2024-11-23 23:56:22,234 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 15196 transitions. Word has length 128 [2024-11-23 23:56:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:22,235 INFO L471 AbstractCegarLoop]: Abstraction has 9016 states and 15196 transitions. [2024-11-23 23:56:22,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:56:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 15196 transitions. [2024-11-23 23:56:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-23 23:56:22,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:22,243 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:22,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:56:22,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:22,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1056986243, now seen corresponding path program 1 times [2024-11-23 23:56:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609449184] [2024-11-23 23:56:22,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:56:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609449184] [2024-11-23 23:56:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609449184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:22,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:22,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:56:22,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252380918] [2024-11-23 23:56:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:22,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:22,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:22,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:22,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:22,603 INFO L87 Difference]: Start difference. First operand 9016 states and 15196 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:56:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:24,434 INFO L93 Difference]: Finished difference Result 27066 states and 47329 transitions. [2024-11-23 23:56:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:56:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2024-11-23 23:56:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:24,610 INFO L225 Difference]: With dead ends: 27066 [2024-11-23 23:56:24,611 INFO L226 Difference]: Without dead ends: 18068 [2024-11-23 23:56:24,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:24,696 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 888 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:24,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 4539 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:56:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18068 states. [2024-11-23 23:56:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18068 to 17967. [2024-11-23 23:56:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17967 states, 13927 states have (on average 1.611402312055719) internal successors, (22442), 14476 states have internal predecessors, (22442), 3202 states have call successors, (3202), 854 states have call predecessors, (3202), 837 states have return successors, (5629), 3140 states have call predecessors, (5629), 3184 states have call successors, (5629) [2024-11-23 23:56:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17967 states to 17967 states and 31273 transitions. [2024-11-23 23:56:26,435 INFO L78 Accepts]: Start accepts. Automaton has 17967 states and 31273 transitions. Word has length 137 [2024-11-23 23:56:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:26,436 INFO L471 AbstractCegarLoop]: Abstraction has 17967 states and 31273 transitions. [2024-11-23 23:56:26,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:56:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 17967 states and 31273 transitions. [2024-11-23 23:56:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 23:56:26,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:26,448 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:26,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:56:26,449 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:26,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1205176466, now seen corresponding path program 1 times [2024-11-23 23:56:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458920366] [2024-11-23 23:56:26,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:56:26,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:26,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458920366] [2024-11-23 23:56:26,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458920366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:26,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956603200] [2024-11-23 23:56:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:26,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:26,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:26,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:26,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:26,767 INFO L87 Difference]: Start difference. First operand 17967 states and 31273 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:56:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:28,090 INFO L93 Difference]: Finished difference Result 36060 states and 64127 transitions. [2024-11-23 23:56:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:28,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-23 23:56:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:28,277 INFO L225 Difference]: With dead ends: 36060 [2024-11-23 23:56:28,278 INFO L226 Difference]: Without dead ends: 18111 [2024-11-23 23:56:28,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:28,696 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 11 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:28,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2625 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18111 states. [2024-11-23 23:56:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18111 to 18047. [2024-11-23 23:56:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18047 states, 13999 states have (on average 1.6088292020858632) internal successors, (22522), 14548 states have internal predecessors, (22522), 3202 states have call successors, (3202), 870 states have call predecessors, (3202), 845 states have return successors, (5613), 3132 states have call predecessors, (5613), 3184 states have call successors, (5613) [2024-11-23 23:56:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18047 states to 18047 states and 31337 transitions. [2024-11-23 23:56:29,956 INFO L78 Accepts]: Start accepts. Automaton has 18047 states and 31337 transitions. Word has length 139 [2024-11-23 23:56:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:29,958 INFO L471 AbstractCegarLoop]: Abstraction has 18047 states and 31337 transitions. [2024-11-23 23:56:29,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:56:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18047 states and 31337 transitions. [2024-11-23 23:56:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 23:56:29,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:29,972 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:29,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:56:29,972 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:29,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash -138519766, now seen corresponding path program 1 times [2024-11-23 23:56:29,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:29,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047775610] [2024-11-23 23:56:29,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 23:56:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047775610] [2024-11-23 23:56:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047775610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:56:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607863435] [2024-11-23 23:56:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:30,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:30,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:30,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:30,257 INFO L87 Difference]: Start difference. First operand 18047 states and 31337 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 23:56:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:33,677 INFO L93 Difference]: Finished difference Result 54280 states and 99687 transitions. [2024-11-23 23:56:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:56:33,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 149 [2024-11-23 23:56:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:34,071 INFO L225 Difference]: With dead ends: 54280 [2024-11-23 23:56:34,072 INFO L226 Difference]: Without dead ends: 36251 [2024-11-23 23:56:34,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:56:34,301 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 885 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:34,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 4496 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:56:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36251 states. [2024-11-23 23:56:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36251 to 36086. [2024-11-23 23:56:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36086 states, 27995 states have (on average 1.605679585640293) internal successors, (44951), 29088 states have internal predecessors, (44951), 6389 states have call successors, (6389), 1734 states have call predecessors, (6389), 1701 states have return successors, (14622), 6271 states have call predecessors, (14622), 6355 states have call successors, (14622) [2024-11-23 23:56:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36086 states to 36086 states and 65962 transitions. [2024-11-23 23:56:37,511 INFO L78 Accepts]: Start accepts. Automaton has 36086 states and 65962 transitions. Word has length 149 [2024-11-23 23:56:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:37,512 INFO L471 AbstractCegarLoop]: Abstraction has 36086 states and 65962 transitions. [2024-11-23 23:56:37,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-23 23:56:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 36086 states and 65962 transitions. [2024-11-23 23:56:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 23:56:37,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:37,527 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:37,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:56:37,528 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:37,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -800557688, now seen corresponding path program 1 times [2024-11-23 23:56:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321783023] [2024-11-23 23:56:37,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:56:37,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321783023] [2024-11-23 23:56:37,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321783023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:37,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:37,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:56:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842280608] [2024-11-23 23:56:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:37,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:37,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:37,925 INFO L87 Difference]: Start difference. First operand 36086 states and 65962 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 23:56:40,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:40,994 INFO L93 Difference]: Finished difference Result 72407 states and 137311 transitions. [2024-11-23 23:56:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:40,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2024-11-23 23:56:40,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:41,402 INFO L225 Difference]: With dead ends: 72407 [2024-11-23 23:56:41,402 INFO L226 Difference]: Without dead ends: 36291 [2024-11-23 23:56:42,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:42,183 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 9 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:42,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2622 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:56:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36291 states. [2024-11-23 23:56:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36291 to 36165. [2024-11-23 23:56:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36165 states, 28067 states have (on average 1.6025581643923468) internal successors, (44979), 29173 states have internal predecessors, (44979), 6382 states have call successors, (6382), 1748 states have call predecessors, (6382), 1715 states have return successors, (14522), 6250 states have call predecessors, (14522), 6348 states have call successors, (14522) [2024-11-23 23:56:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36165 states to 36165 states and 65883 transitions. [2024-11-23 23:56:45,237 INFO L78 Accepts]: Start accepts. Automaton has 36165 states and 65883 transitions. Word has length 151 [2024-11-23 23:56:45,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:45,240 INFO L471 AbstractCegarLoop]: Abstraction has 36165 states and 65883 transitions. [2024-11-23 23:56:45,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 23:56:45,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36165 states and 65883 transitions. [2024-11-23 23:56:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:56:45,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:45,259 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:56:45,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:56:45,259 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:45,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1487389991, now seen corresponding path program 1 times [2024-11-23 23:56:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:45,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107784627] [2024-11-23 23:56:45,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:56:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107784627] [2024-11-23 23:56:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107784627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735867492] [2024-11-23 23:56:46,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:46,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:46,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:46,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:46,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:56:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:46,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:56:46,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:56:46,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:46,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735867492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:46,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2024-11-23 23:56:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818853727] [2024-11-23 23:56:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:46,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:56:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:46,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:56:46,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:56:46,712 INFO L87 Difference]: Start difference. First operand 36165 states and 65883 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:56:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:49,789 INFO L93 Difference]: Finished difference Result 80693 states and 151721 transitions. [2024-11-23 23:56:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:56:49,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2024-11-23 23:56:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:50,598 INFO L225 Difference]: With dead ends: 80693 [2024-11-23 23:56:50,599 INFO L226 Difference]: Without dead ends: 58357 [2024-11-23 23:56:50,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:56:50,880 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 888 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:50,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58357 states. [2024-11-23 23:56:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58357 to 58113. [2024-11-23 23:56:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58113 states, 45217 states have (on average 1.6158966760289273) internal successors, (73066), 46933 states have internal predecessors, (73066), 10124 states have call successors, (10124), 2756 states have call predecessors, (10124), 2771 states have return successors, (24849), 10054 states have call predecessors, (24849), 10074 states have call successors, (24849) [2024-11-23 23:56:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58113 states to 58113 states and 108039 transitions. [2024-11-23 23:56:54,890 INFO L78 Accepts]: Start accepts. Automaton has 58113 states and 108039 transitions. Word has length 185 [2024-11-23 23:56:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:54,890 INFO L471 AbstractCegarLoop]: Abstraction has 58113 states and 108039 transitions. [2024-11-23 23:56:54,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:56:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 58113 states and 108039 transitions. [2024-11-23 23:56:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-23 23:56:54,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:54,905 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:56:54,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:56:55,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:55,109 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:55,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash -249495813, now seen corresponding path program 1 times [2024-11-23 23:56:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:55,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011226829] [2024-11-23 23:56:55,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:56:55,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011226829] [2024-11-23 23:56:55,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011226829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716341408] [2024-11-23 23:56:55,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:55,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:55,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:55,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:56:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:56,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 2051 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:56:56,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:56:56,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716341408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-23 23:56:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666386117] [2024-11-23 23:56:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:56,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:56:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:56,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:56:56,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:56:56,515 INFO L87 Difference]: Start difference. First operand 58113 states and 108039 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-23 23:57:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:08,957 INFO L93 Difference]: Finished difference Result 152888 states and 308511 transitions. [2024-11-23 23:57:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:57:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 184 [2024-11-23 23:57:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:10,263 INFO L225 Difference]: With dead ends: 152888 [2024-11-23 23:57:10,263 INFO L226 Difference]: Without dead ends: 90905 [2024-11-23 23:57:11,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:57:11,582 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 2436 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 4876 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 5677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 4876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:11,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 2159 Invalid, 5677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [801 Valid, 4876 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-23 23:57:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90905 states. [2024-11-23 23:57:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90905 to 82045. [2024-11-23 23:57:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82045 states, 63823 states have (on average 1.6129765131692337) internal successors, (102945), 66213 states have internal predecessors, (102945), 14250 states have call successors, (14250), 3732 states have call predecessors, (14250), 3971 states have return successors, (39780), 14226 states have call predecessors, (39780), 14184 states have call successors, (39780) [2024-11-23 23:57:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82045 states to 82045 states and 156975 transitions. [2024-11-23 23:57:18,074 INFO L78 Accepts]: Start accepts. Automaton has 82045 states and 156975 transitions. Word has length 184 [2024-11-23 23:57:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:18,075 INFO L471 AbstractCegarLoop]: Abstraction has 82045 states and 156975 transitions. [2024-11-23 23:57:18,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 7 states have internal predecessors, (138), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-23 23:57:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 82045 states and 156975 transitions. [2024-11-23 23:57:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-23 23:57:18,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:18,091 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:18,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:18,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:18,292 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:18,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1577182797, now seen corresponding path program 1 times [2024-11-23 23:57:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072496829] [2024-11-23 23:57:18,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-23 23:57:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072496829] [2024-11-23 23:57:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072496829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027827906] [2024-11-23 23:57:19,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:19,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:19,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de7061ef-2a2b-4d8b-bc0d-fd4d8b4c61bf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:57:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:19,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:57:19,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 23:57:19,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:57:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027827906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:57:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-23 23:57:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137544189] [2024-11-23 23:57:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:19,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:57:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:19,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:57:19,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:57:19,938 INFO L87 Difference]: Start difference. First operand 82045 states and 156975 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25)