./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/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_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/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_9c9a8dae-327d-46f6-832d-87465f5ca4f7/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 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:34:06,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:34:06,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:34:06,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:34:06,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:34:06,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:34:06,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:34:06,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:34:06,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:34:06,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:34:06,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:34:06,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:34:06,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:34:06,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:34:06,330 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:34:06,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:34:06,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:34:06,331 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:34:06,332 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:06,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:06,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:06,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:06,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:34:06,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:34:06,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:34:06,335 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_9c9a8dae-327d-46f6-832d-87465f5ca4f7/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 -> 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a [2024-11-24 00:34:06,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:34:06,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:34:06,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:34:06,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:34:06,690 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:34:06,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2024-11-24 00:34:09,927 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/data/fe0bfafd5/b0b665a3c99f4f96b528e8659db5af5b/FLAG3f1afe3c0 [2024-11-24 00:34:10,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:34:10,271 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2024-11-24 00:34:10,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/data/fe0bfafd5/b0b665a3c99f4f96b528e8659db5af5b/FLAG3f1afe3c0 [2024-11-24 00:34:10,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/data/fe0bfafd5/b0b665a3c99f4f96b528e8659db5af5b [2024-11-24 00:34:10,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:34:10,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:34:10,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:10,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:34:10,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:34:10,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:10" (1/1) ... [2024-11-24 00:34:10,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e63255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:10, skipping insertion in model container [2024-11-24 00:34:10,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:10" (1/1) ... [2024-11-24 00:34:10,590 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:34:11,014 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_9c9a8dae-327d-46f6-832d-87465f5ca4f7/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2024-11-24 00:34:11,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:11,251 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:34:11,263 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-24 00:34:11,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1664] [2024-11-24 00:34:11,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1702] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1711] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2373] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2387] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2506] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2859] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3225] [2024-11-24 00:34:11,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3316] [2024-11-24 00:34:11,364 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_9c9a8dae-327d-46f6-832d-87465f5ca4f7/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2024-11-24 00:34:11,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:11,484 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:34:11,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11 WrapperNode [2024-11-24 00:34:11,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:11,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:11,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:34:11,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:34:11,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,682 INFO L138 Inliner]: procedures = 97, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1176 [2024-11-24 00:34:11,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:11,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:34:11,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:34:11,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:34:11,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,748 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-24 00:34:11,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,768 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:34:11,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:34:11,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:34:11,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:34:11,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (1/1) ... [2024-11-24 00:34:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:11,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:11,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:34:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:34:11,953 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-24 00:34:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 00:34:11,954 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 00:34:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 00:34:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-24 00:34:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 00:34:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 00:34:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 00:34:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 00:34:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:34:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:34:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:34:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:34:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:34:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 00:34:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 00:34:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 00:34:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 00:34:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 00:34:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:34:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:34:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 00:34:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 00:34:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-24 00:34:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-24 00:34:12,233 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:34:12,234 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:34:13,980 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2024-11-24 00:34:13,980 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:34:14,021 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:34:14,021 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:34:14,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:14 BoogieIcfgContainer [2024-11-24 00:34:14,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:34:14,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:34:14,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:34:14,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:34:14,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:34:10" (1/3) ... [2024-11-24 00:34:14,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a301ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:14, skipping insertion in model container [2024-11-24 00:34:14,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:11" (2/3) ... [2024-11-24 00:34:14,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a301ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:14, skipping insertion in model container [2024-11-24 00:34:14,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:14" (3/3) ... [2024-11-24 00:34:14,039 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2024-11-24 00:34:14,056 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:34:14,059 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product28.cil.c that has 26 procedures, 577 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:34:14,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:34:14,183 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;@252557cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:34:14,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:34:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 451 states have (on average 1.689578713968958) internal successors, (762), 474 states have internal predecessors, (762), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-24 00:34:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 00:34:14,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:14,210 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:14,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:14,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -620692140, now seen corresponding path program 1 times [2024-11-24 00:34:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144527808] [2024-11-24 00:34:14,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:14,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:14,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144527808] [2024-11-24 00:34:14,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144527808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279298105] [2024-11-24 00:34:14,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:14,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:14,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:14,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:14,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:14,925 INFO L87 Difference]: Start difference. First operand has 577 states, 451 states have (on average 1.689578713968958) internal successors, (762), 474 states have internal predecessors, (762), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:15,170 INFO L93 Difference]: Finished difference Result 1134 states and 1895 transitions. [2024-11-24 00:34:15,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-24 00:34:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:15,198 INFO L225 Difference]: With dead ends: 1134 [2024-11-24 00:34:15,201 INFO L226 Difference]: Without dead ends: 569 [2024-11-24 00:34:15,214 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 [2024-11-24 00:34:15,220 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 5 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:15,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2813 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-24 00:34:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-24 00:34:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6853932584269662) internal successors, (750), 466 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 943 transitions. [2024-11-24 00:34:15,352 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 943 transitions. Word has length 60 [2024-11-24 00:34:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:15,352 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 943 transitions. [2024-11-24 00:34:15,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 943 transitions. [2024-11-24 00:34:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:34:15,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:15,358 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:15,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:34:15,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:15,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2002578820, now seen corresponding path program 1 times [2024-11-24 00:34:15,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120622008] [2024-11-24 00:34:15,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:15,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120622008] [2024-11-24 00:34:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120622008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:15,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856315148] [2024-11-24 00:34:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:15,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:15,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:15,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:15,690 INFO L87 Difference]: Start difference. First operand 569 states and 943 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:15,841 INFO L93 Difference]: Finished difference Result 1120 states and 1863 transitions. [2024-11-24 00:34:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:15,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-24 00:34:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:15,854 INFO L225 Difference]: With dead ends: 1120 [2024-11-24 00:34:15,854 INFO L226 Difference]: Without dead ends: 569 [2024-11-24 00:34:15,861 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 [2024-11-24 00:34:15,862 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 4 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:15,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2792 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-24 00:34:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-24 00:34:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6831460674157304) internal successors, (749), 466 states have internal predecessors, (749), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 942 transitions. [2024-11-24 00:34:15,937 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 942 transitions. Word has length 62 [2024-11-24 00:34:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:15,938 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 942 transitions. [2024-11-24 00:34:15,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 942 transitions. [2024-11-24 00:34:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:34:15,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:15,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:34:15,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:15,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1259898362, now seen corresponding path program 1 times [2024-11-24 00:34:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662166817] [2024-11-24 00:34:15,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662166817] [2024-11-24 00:34:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662166817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:16,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:16,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662378298] [2024-11-24 00:34:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:16,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:16,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:16,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:16,195 INFO L87 Difference]: Start difference. First operand 569 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:16,293 INFO L93 Difference]: Finished difference Result 1120 states and 1862 transitions. [2024-11-24 00:34:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:16,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-24 00:34:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:16,303 INFO L225 Difference]: With dead ends: 1120 [2024-11-24 00:34:16,304 INFO L226 Difference]: Without dead ends: 569 [2024-11-24 00:34:16,307 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 [2024-11-24 00:34:16,308 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 3 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2792 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 [2024-11-24 00:34:16,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2792 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-24 00:34:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-24 00:34:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6808988764044943) internal successors, (748), 466 states have internal predecessors, (748), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 941 transitions. [2024-11-24 00:34:16,351 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 941 transitions. Word has length 63 [2024-11-24 00:34:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:16,352 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 941 transitions. [2024-11-24 00:34:16,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 941 transitions. [2024-11-24 00:34:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:34:16,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:16,356 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:16,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:34:16,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:16,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:16,358 INFO L85 PathProgramCache]: Analyzing trace with hash -713561536, now seen corresponding path program 1 times [2024-11-24 00:34:16,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:16,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517541058] [2024-11-24 00:34:16,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:16,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517541058] [2024-11-24 00:34:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517541058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115324408] [2024-11-24 00:34:16,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:16,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:16,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:16,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:16,569 INFO L87 Difference]: Start difference. First operand 569 states and 941 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:16,650 INFO L93 Difference]: Finished difference Result 1120 states and 1861 transitions. [2024-11-24 00:34:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-24 00:34:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:16,658 INFO L225 Difference]: With dead ends: 1120 [2024-11-24 00:34:16,659 INFO L226 Difference]: Without dead ends: 569 [2024-11-24 00:34:16,663 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 [2024-11-24 00:34:16,668 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 2 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:16,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2792 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-24 00:34:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-24 00:34:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6786516853932585) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 940 transitions. [2024-11-24 00:34:16,723 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 940 transitions. Word has length 64 [2024-11-24 00:34:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:16,724 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 940 transitions. [2024-11-24 00:34:16,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 940 transitions. [2024-11-24 00:34:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 00:34:16,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:16,726 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:16,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:34:16,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:16,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1792313666, now seen corresponding path program 1 times [2024-11-24 00:34:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991248328] [2024-11-24 00:34:16,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991248328] [2024-11-24 00:34:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991248328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:16,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:16,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980852543] [2024-11-24 00:34:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:16,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:16,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:16,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:16,885 INFO L87 Difference]: Start difference. First operand 569 states and 940 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:16,959 INFO L93 Difference]: Finished difference Result 1120 states and 1860 transitions. [2024-11-24 00:34:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:16,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-24 00:34:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:16,968 INFO L225 Difference]: With dead ends: 1120 [2024-11-24 00:34:16,968 INFO L226 Difference]: Without dead ends: 569 [2024-11-24 00:34:16,971 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 [2024-11-24 00:34:16,973 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 1 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:16,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2792 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-24 00:34:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-24 00:34:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6764044943820224) internal successors, (746), 466 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 939 transitions. [2024-11-24 00:34:17,014 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 939 transitions. Word has length 65 [2024-11-24 00:34:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:17,015 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 939 transitions. [2024-11-24 00:34:17,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 939 transitions. [2024-11-24 00:34:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:34:17,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:17,018 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:17,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:34:17,019 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:17,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash -904928764, now seen corresponding path program 1 times [2024-11-24 00:34:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510195477] [2024-11-24 00:34:17,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510195477] [2024-11-24 00:34:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510195477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:34:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427976648] [2024-11-24 00:34:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:17,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:34:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:17,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:34:17,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:17,306 INFO L87 Difference]: Start difference. First operand 569 states and 939 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:34:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:17,455 INFO L93 Difference]: Finished difference Result 1086 states and 1792 transitions. [2024-11-24 00:34:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:34:17,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-24 00:34:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:17,462 INFO L225 Difference]: With dead ends: 1086 [2024-11-24 00:34:17,462 INFO L226 Difference]: Without dead ends: 584 [2024-11-24 00:34:17,465 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 [2024-11-24 00:34:17,466 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 91 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5493 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:17,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5493 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-24 00:34:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2024-11-24 00:34:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 455 states have (on average 1.6725274725274726) internal successors, (761), 478 states have internal predecessors, (761), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2024-11-24 00:34:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 958 transitions. [2024-11-24 00:34:17,507 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 958 transitions. Word has length 66 [2024-11-24 00:34:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:17,508 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 958 transitions. [2024-11-24 00:34:17,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:34:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 958 transitions. [2024-11-24 00:34:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 00:34:17,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:17,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:17,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:34:17,513 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:17,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash -912688123, now seen corresponding path program 1 times [2024-11-24 00:34:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:17,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750968921] [2024-11-24 00:34:17,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:17,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750968921] [2024-11-24 00:34:17,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750968921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:17,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:17,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258874559] [2024-11-24 00:34:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:17,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:17,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:17,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:17,643 INFO L87 Difference]: Start difference. First operand 582 states and 958 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:17,725 INFO L93 Difference]: Finished difference Result 1138 states and 1886 transitions. [2024-11-24 00:34:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-24 00:34:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:17,735 INFO L225 Difference]: With dead ends: 1138 [2024-11-24 00:34:17,735 INFO L226 Difference]: Without dead ends: 563 [2024-11-24 00:34:17,738 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 [2024-11-24 00:34:17,739 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 0 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:17,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2794 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-24 00:34:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2024-11-24 00:34:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6674259681093395) internal successors, (732), 460 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 925 transitions. [2024-11-24 00:34:17,783 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 925 transitions. Word has length 66 [2024-11-24 00:34:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:17,783 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 925 transitions. [2024-11-24 00:34:17,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 925 transitions. [2024-11-24 00:34:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 00:34:17,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:17,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:17,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:34:17,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:17,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash 352548935, now seen corresponding path program 1 times [2024-11-24 00:34:17,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:17,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765287708] [2024-11-24 00:34:17,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:17,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:18,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:18,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765287708] [2024-11-24 00:34:18,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765287708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:18,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:18,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587579495] [2024-11-24 00:34:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:18,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:18,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:18,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:18,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:18,002 INFO L87 Difference]: Start difference. First operand 563 states and 925 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:18,279 INFO L93 Difference]: Finished difference Result 1083 states and 1784 transitions. [2024-11-24 00:34:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-24 00:34:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:18,285 INFO L225 Difference]: With dead ends: 1083 [2024-11-24 00:34:18,286 INFO L226 Difference]: Without dead ends: 572 [2024-11-24 00:34:18,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:18,289 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 55 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:18,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4381 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:34:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-24 00:34:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 563. [2024-11-24 00:34:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6583143507972664) internal successors, (728), 460 states have internal predecessors, (728), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 921 transitions. [2024-11-24 00:34:18,315 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 921 transitions. Word has length 67 [2024-11-24 00:34:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:18,316 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 921 transitions. [2024-11-24 00:34:18,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 921 transitions. [2024-11-24 00:34:18,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 00:34:18,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:18,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:18,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:34:18,318 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1779873121, now seen corresponding path program 1 times [2024-11-24 00:34:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261739726] [2024-11-24 00:34:18,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:18,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:18,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261739726] [2024-11-24 00:34:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261739726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131249473] [2024-11-24 00:34:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:18,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:18,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:18,475 INFO L87 Difference]: Start difference. First operand 563 states and 921 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:18,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:18,717 INFO L93 Difference]: Finished difference Result 1083 states and 1780 transitions. [2024-11-24 00:34:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:18,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-24 00:34:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:18,724 INFO L225 Difference]: With dead ends: 1083 [2024-11-24 00:34:18,724 INFO L226 Difference]: Without dead ends: 572 [2024-11-24 00:34:18,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:18,728 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 54 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:18,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4381 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:34:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-24 00:34:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 563. [2024-11-24 00:34:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6492027334851935) internal successors, (724), 460 states have internal predecessors, (724), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 917 transitions. [2024-11-24 00:34:18,756 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 917 transitions. Word has length 68 [2024-11-24 00:34:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:18,756 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 917 transitions. [2024-11-24 00:34:18,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 917 transitions. [2024-11-24 00:34:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 00:34:18,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:18,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:18,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:34:18,759 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:18,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash -597351134, now seen corresponding path program 1 times [2024-11-24 00:34:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:18,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772640650] [2024-11-24 00:34:18,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772640650] [2024-11-24 00:34:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772640650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:18,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:18,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194965532] [2024-11-24 00:34:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:18,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:18,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:18,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:18,930 INFO L87 Difference]: Start difference. First operand 563 states and 917 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:19,152 INFO L93 Difference]: Finished difference Result 1083 states and 1776 transitions. [2024-11-24 00:34:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-24 00:34:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:19,158 INFO L225 Difference]: With dead ends: 1083 [2024-11-24 00:34:19,158 INFO L226 Difference]: Without dead ends: 572 [2024-11-24 00:34:19,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:19,163 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 53 mSDsluCounter, 3482 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:19,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4363 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:34:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-24 00:34:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 563. [2024-11-24 00:34:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6400911161731206) internal successors, (720), 460 states have internal predecessors, (720), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 913 transitions. [2024-11-24 00:34:19,194 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 913 transitions. Word has length 69 [2024-11-24 00:34:19,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:19,195 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 913 transitions. [2024-11-24 00:34:19,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 913 transitions. [2024-11-24 00:34:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 00:34:19,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:19,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:19,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:34:19,196 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:19,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1276852386, now seen corresponding path program 1 times [2024-11-24 00:34:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645922425] [2024-11-24 00:34:19,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645922425] [2024-11-24 00:34:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645922425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:19,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:34:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316786406] [2024-11-24 00:34:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:19,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:34:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:19,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:34:19,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:19,375 INFO L87 Difference]: Start difference. First operand 563 states and 913 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:34:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:19,466 INFO L93 Difference]: Finished difference Result 1074 states and 1758 transitions. [2024-11-24 00:34:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:34:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-24 00:34:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:19,472 INFO L225 Difference]: With dead ends: 1074 [2024-11-24 00:34:19,472 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:34:19,475 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 [2024-11-24 00:34:19,475 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 84 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:19,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5339 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:34:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-24 00:34:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.6411483253588517) internal successors, (686), 439 states have internal predecessors, (686), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 879 transitions. [2024-11-24 00:34:19,500 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 879 transitions. Word has length 69 [2024-11-24 00:34:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:19,500 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 879 transitions. [2024-11-24 00:34:19,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:34:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 879 transitions. [2024-11-24 00:34:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 00:34:19,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:19,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:19,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:34:19,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:19,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -656492772, now seen corresponding path program 1 times [2024-11-24 00:34:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46634424] [2024-11-24 00:34:19,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:19,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:19,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46634424] [2024-11-24 00:34:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46634424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:19,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:19,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:19,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556116017] [2024-11-24 00:34:19,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:19,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:19,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:19,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:19,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:19,641 INFO L87 Difference]: Start difference. First operand 542 states and 879 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:19,754 INFO L93 Difference]: Finished difference Result 1053 states and 1724 transitions. [2024-11-24 00:34:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:19,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-24 00:34:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:19,760 INFO L225 Difference]: With dead ends: 1053 [2024-11-24 00:34:19,761 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:34:19,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:19,764 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 17 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:19,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4301 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:34:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-24 00:34:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.638755980861244) internal successors, (685), 439 states have internal predecessors, (685), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 878 transitions. [2024-11-24 00:34:19,787 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 878 transitions. Word has length 70 [2024-11-24 00:34:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:19,787 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 878 transitions. [2024-11-24 00:34:19,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 878 transitions. [2024-11-24 00:34:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 00:34:19,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:19,789 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:19,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:34:19,789 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:19,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:19,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1869517315, now seen corresponding path program 1 times [2024-11-24 00:34:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798697233] [2024-11-24 00:34:19,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:19,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798697233] [2024-11-24 00:34:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798697233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145022413] [2024-11-24 00:34:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:19,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:19,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:19,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:19,970 INFO L87 Difference]: Start difference. First operand 542 states and 878 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:20,064 INFO L93 Difference]: Finished difference Result 1053 states and 1723 transitions. [2024-11-24 00:34:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-24 00:34:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:20,071 INFO L225 Difference]: With dead ends: 1053 [2024-11-24 00:34:20,071 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:34:20,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:34:20,074 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 16 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:20,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4301 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:34:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-24 00:34:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.6363636363636365) internal successors, (684), 439 states have internal predecessors, (684), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 877 transitions. [2024-11-24 00:34:20,097 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 877 transitions. Word has length 71 [2024-11-24 00:34:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:20,098 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 877 transitions. [2024-11-24 00:34:20,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 877 transitions. [2024-11-24 00:34:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-24 00:34:20,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:20,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:20,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:34:20,099 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:20,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -198206249, now seen corresponding path program 1 times [2024-11-24 00:34:20,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36786844] [2024-11-24 00:34:20,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:20,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36786844] [2024-11-24 00:34:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36786844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:20,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:20,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5528039] [2024-11-24 00:34:20,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:20,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:20,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:20,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:20,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:20,223 INFO L87 Difference]: Start difference. First operand 542 states and 877 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:20,273 INFO L93 Difference]: Finished difference Result 1047 states and 1711 transitions. [2024-11-24 00:34:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:20,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-24 00:34:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:20,280 INFO L225 Difference]: With dead ends: 1047 [2024-11-24 00:34:20,280 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:34:20,283 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 [2024-11-24 00:34:20,283 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 5 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:20,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2585 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:34:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-24 00:34:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.6339712918660287) internal successors, (683), 439 states have internal predecessors, (683), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:34:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 876 transitions. [2024-11-24 00:34:20,311 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 876 transitions. Word has length 72 [2024-11-24 00:34:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:20,312 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 876 transitions. [2024-11-24 00:34:20,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:34:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 876 transitions. [2024-11-24 00:34:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 00:34:20,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:20,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:20,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:34:20,315 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:20,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -16657400, now seen corresponding path program 1 times [2024-11-24 00:34:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774571092] [2024-11-24 00:34:20,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774571092] [2024-11-24 00:34:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774571092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:20,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:34:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987023222] [2024-11-24 00:34:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:20,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:20,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:20,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:34:20,617 INFO L87 Difference]: Start difference. First operand 542 states and 876 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-24 00:34:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:23,703 INFO L93 Difference]: Finished difference Result 1675 states and 2769 transitions. [2024-11-24 00:34:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 73 [2024-11-24 00:34:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:23,714 INFO L225 Difference]: With dead ends: 1675 [2024-11-24 00:34:23,715 INFO L226 Difference]: Without dead ends: 1178 [2024-11-24 00:34:23,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:34:23,718 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 2574 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:23,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 1231 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 00:34:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2024-11-24 00:34:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1056. [2024-11-24 00:34:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 819 states have (on average 1.6532356532356531) internal successors, (1354), 849 states have internal predecessors, (1354), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2024-11-24 00:34:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1740 transitions. [2024-11-24 00:34:23,805 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1740 transitions. Word has length 73 [2024-11-24 00:34:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:23,806 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1740 transitions. [2024-11-24 00:34:23,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-24 00:34:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1740 transitions. [2024-11-24 00:34:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 00:34:23,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:23,813 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:23,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:34:23,813 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:23,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash -77200318, now seen corresponding path program 1 times [2024-11-24 00:34:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957482912] [2024-11-24 00:34:23,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:23,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:34:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957482912] [2024-11-24 00:34:24,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957482912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:24,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:24,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:34:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073703212] [2024-11-24 00:34:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:24,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:34:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:24,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:34:24,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:34:24,404 INFO L87 Difference]: Start difference. First operand 1056 states and 1740 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-24 00:34:33,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:33,199 INFO L93 Difference]: Finished difference Result 3854 states and 6367 transitions. [2024-11-24 00:34:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:34:33,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 125 [2024-11-24 00:34:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:33,274 INFO L225 Difference]: With dead ends: 3854 [2024-11-24 00:34:33,274 INFO L226 Difference]: Without dead ends: 2843 [2024-11-24 00:34:33,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:34:33,297 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 2888 mSDsluCounter, 6336 mSDsCounter, 0 mSdLazyCounter, 12626 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 7089 SdHoareTripleChecker+Invalid, 13574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 12626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:33,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 7089 Invalid, 13574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [948 Valid, 12626 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-24 00:34:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2024-11-24 00:34:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2749. [2024-11-24 00:34:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2056 states have (on average 1.617704280155642) internal successors, (3326), 2132 states have internal predecessors, (3326), 574 states have call successors, (574), 101 states have call predecessors, (574), 118 states have return successors, (607), 548 states have call predecessors, (607), 569 states have call successors, (607) [2024-11-24 00:34:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4507 transitions. [2024-11-24 00:34:33,513 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4507 transitions. Word has length 125 [2024-11-24 00:34:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:33,513 INFO L471 AbstractCegarLoop]: Abstraction has 2749 states and 4507 transitions. [2024-11-24 00:34:33,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-24 00:34:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4507 transitions. [2024-11-24 00:34:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 00:34:33,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:33,518 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:33,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:34:33,519 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:33,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash -962648163, now seen corresponding path program 1 times [2024-11-24 00:34:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126931819] [2024-11-24 00:34:33,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126931819] [2024-11-24 00:34:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126931819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927181028] [2024-11-24 00:34:33,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:33,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:33,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:33,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:34:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:34,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:34:34,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:34,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927181028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:34:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189448677] [2024-11-24 00:34:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:34,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:34,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:34,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:34:34,336 INFO L87 Difference]: Start difference. First operand 2749 states and 4507 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:35,161 INFO L93 Difference]: Finished difference Result 5517 states and 9218 transitions. [2024-11-24 00:34:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2024-11-24 00:34:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:35,182 INFO L225 Difference]: With dead ends: 5517 [2024-11-24 00:34:35,182 INFO L226 Difference]: Without dead ends: 2813 [2024-11-24 00:34:35,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:34:35,200 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 823 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:35,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2194 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:34:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-11-24 00:34:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2813. [2024-11-24 00:34:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2112 states have (on average 1.6202651515151516) internal successors, (3422), 2188 states have internal predecessors, (3422), 574 states have call successors, (574), 109 states have call predecessors, (574), 126 states have return successors, (613), 548 states have call predecessors, (613), 569 states have call successors, (613) [2024-11-24 00:34:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4609 transitions. [2024-11-24 00:34:35,389 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4609 transitions. Word has length 126 [2024-11-24 00:34:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:35,389 INFO L471 AbstractCegarLoop]: Abstraction has 2813 states and 4609 transitions. [2024-11-24 00:34:35,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4609 transitions. [2024-11-24 00:34:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-24 00:34:35,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:35,394 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:35,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:34:35,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:34:35,599 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:35,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1111888937, now seen corresponding path program 1 times [2024-11-24 00:34:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525261928] [2024-11-24 00:34:35,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525261928] [2024-11-24 00:34:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525261928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552155240] [2024-11-24 00:34:35,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:35,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:35,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:35,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:34:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:36,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:34:36,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:36,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552155240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:36,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:36,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:34:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451424795] [2024-11-24 00:34:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:36,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:36,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:36,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:34:36,455 INFO L87 Difference]: Start difference. First operand 2813 states and 4609 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:37,199 INFO L93 Difference]: Finished difference Result 5645 states and 9404 transitions. [2024-11-24 00:34:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-24 00:34:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:37,220 INFO L225 Difference]: With dead ends: 5645 [2024-11-24 00:34:37,220 INFO L226 Difference]: Without dead ends: 2877 [2024-11-24 00:34:37,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:34:37,233 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 821 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:37,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2191 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:34:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-24 00:34:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2024-11-24 00:34:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2168 states have (on average 1.6226937269372694) internal successors, (3518), 2244 states have internal predecessors, (3518), 574 states have call successors, (574), 117 states have call predecessors, (574), 134 states have return successors, (619), 548 states have call predecessors, (619), 569 states have call successors, (619) [2024-11-24 00:34:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4711 transitions. [2024-11-24 00:34:37,425 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4711 transitions. Word has length 128 [2024-11-24 00:34:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:37,425 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 4711 transitions. [2024-11-24 00:34:37,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4711 transitions. [2024-11-24 00:34:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-24 00:34:37,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:37,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:37,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:34:37,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:34:37,636 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:37,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash 780877085, now seen corresponding path program 1 times [2024-11-24 00:34:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:37,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44529896] [2024-11-24 00:34:37,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44529896] [2024-11-24 00:34:37,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44529896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:37,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460634878] [2024-11-24 00:34:37,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:37,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:37,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:37,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:34:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:38,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:34:38,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:38,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460634878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:38,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:34:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193512261] [2024-11-24 00:34:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:38,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:38,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:38,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:34:38,425 INFO L87 Difference]: Start difference. First operand 2877 states and 4711 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:39,069 INFO L93 Difference]: Finished difference Result 5773 states and 9590 transitions. [2024-11-24 00:34:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:39,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-24 00:34:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:39,090 INFO L225 Difference]: With dead ends: 5773 [2024-11-24 00:34:39,090 INFO L226 Difference]: Without dead ends: 2941 [2024-11-24 00:34:39,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:34:39,105 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 818 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:39,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2188 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:34:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2024-11-24 00:34:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2941. [2024-11-24 00:34:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2224 states have (on average 1.625) internal successors, (3614), 2300 states have internal predecessors, (3614), 574 states have call successors, (574), 125 states have call predecessors, (574), 142 states have return successors, (625), 548 states have call predecessors, (625), 569 states have call successors, (625) [2024-11-24 00:34:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4813 transitions. [2024-11-24 00:34:39,331 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4813 transitions. Word has length 130 [2024-11-24 00:34:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:39,331 INFO L471 AbstractCegarLoop]: Abstraction has 2941 states and 4813 transitions. [2024-11-24 00:34:39,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4813 transitions. [2024-11-24 00:34:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 00:34:39,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:39,340 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:39,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:34:39,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:39,541 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:39,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1888750687, now seen corresponding path program 1 times [2024-11-24 00:34:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126689669] [2024-11-24 00:34:39,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:39,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126689669] [2024-11-24 00:34:39,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126689669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955850602] [2024-11-24 00:34:39,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:39,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:39,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:39,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:34:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:40,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:34:40,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:40,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955850602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:40,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:40,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:34:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457275183] [2024-11-24 00:34:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:40,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:40,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:40,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:34:40,278 INFO L87 Difference]: Start difference. First operand 2941 states and 4813 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:41,119 INFO L93 Difference]: Finished difference Result 5901 states and 9776 transitions. [2024-11-24 00:34:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-24 00:34:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:41,145 INFO L225 Difference]: With dead ends: 5901 [2024-11-24 00:34:41,145 INFO L226 Difference]: Without dead ends: 3005 [2024-11-24 00:34:41,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:34:41,163 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 796 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:41,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2185 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:34:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-24 00:34:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3005. [2024-11-24 00:34:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2280 states have (on average 1.6271929824561404) internal successors, (3710), 2356 states have internal predecessors, (3710), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-24 00:34:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 4915 transitions. [2024-11-24 00:34:41,371 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 4915 transitions. Word has length 132 [2024-11-24 00:34:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:41,372 INFO L471 AbstractCegarLoop]: Abstraction has 3005 states and 4915 transitions. [2024-11-24 00:34:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 4915 transitions. [2024-11-24 00:34:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 00:34:41,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:41,377 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:41,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:34:41,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:41,581 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:41,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1047739235, now seen corresponding path program 1 times [2024-11-24 00:34:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:41,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809088789] [2024-11-24 00:34:41,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:41,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:34:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809088789] [2024-11-24 00:34:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809088789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877421657] [2024-11-24 00:34:42,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:42,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:34:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:42,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:34:42,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:34:42,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877421657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:42,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:42,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-24 00:34:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109155028] [2024-11-24 00:34:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:42,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:42,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:42,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:42,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:34:42,759 INFO L87 Difference]: Start difference. First operand 3005 states and 4915 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-24 00:34:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:43,280 INFO L93 Difference]: Finished difference Result 3117 states and 5100 transitions. [2024-11-24 00:34:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 134 [2024-11-24 00:34:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:43,306 INFO L225 Difference]: With dead ends: 3117 [2024-11-24 00:34:43,310 INFO L226 Difference]: Without dead ends: 3102 [2024-11-24 00:34:43,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:34:43,314 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 800 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:43,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1576 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:34:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-24 00:34:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3011. [2024-11-24 00:34:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2286 states have (on average 1.625546806649169) internal successors, (3716), 2362 states have internal predecessors, (3716), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-24 00:34:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4921 transitions. [2024-11-24 00:34:43,474 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4921 transitions. Word has length 134 [2024-11-24 00:34:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 3011 states and 4921 transitions. [2024-11-24 00:34:43,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-24 00:34:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4921 transitions. [2024-11-24 00:34:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:34:43,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:43,479 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:43,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:34:43,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:34:43,680 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:43,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2018317704, now seen corresponding path program 1 times [2024-11-24 00:34:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832991814] [2024-11-24 00:34:43,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:34:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832991814] [2024-11-24 00:34:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832991814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668537357] [2024-11-24 00:34:44,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:44,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:44,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:44,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:44,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:34:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:44,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:34:44,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:34:44,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668537357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:44,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-24 00:34:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707705277] [2024-11-24 00:34:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:44,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:34:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:44,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:34:44,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:34:44,680 INFO L87 Difference]: Start difference. First operand 3011 states and 4921 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:45,185 INFO L93 Difference]: Finished difference Result 3215 states and 5221 transitions. [2024-11-24 00:34:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:34:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-24 00:34:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:45,207 INFO L225 Difference]: With dead ends: 3215 [2024-11-24 00:34:45,208 INFO L226 Difference]: Without dead ends: 3200 [2024-11-24 00:34:45,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:34:45,212 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 804 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:45,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 3433 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:34:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2024-11-24 00:34:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3179. [2024-11-24 00:34:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2422 states have (on average 1.6201486374896779) internal successors, (3924), 2498 states have internal predecessors, (3924), 590 states have call successors, (590), 149 states have call predecessors, (590), 166 states have return successors, (657), 564 states have call predecessors, (657), 585 states have call successors, (657) [2024-11-24 00:34:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5171 transitions. [2024-11-24 00:34:45,454 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5171 transitions. Word has length 140 [2024-11-24 00:34:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:45,455 INFO L471 AbstractCegarLoop]: Abstraction has 3179 states and 5171 transitions. [2024-11-24 00:34:45,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:34:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5171 transitions. [2024-11-24 00:34:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-24 00:34:45,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:45,464 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:45,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:34:45,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:45,665 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:45,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1419072856, now seen corresponding path program 1 times [2024-11-24 00:34:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143839707] [2024-11-24 00:34:45,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:34:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143839707] [2024-11-24 00:34:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143839707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276858469] [2024-11-24 00:34:46,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:46,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:46,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:34:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:46,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 00:34:46,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:34:46,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276858469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-24 00:34:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160159890] [2024-11-24 00:34:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:46,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:34:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:46,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:34:46,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:34:46,820 INFO L87 Difference]: Start difference. First operand 3179 states and 5171 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:34:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:50,537 INFO L93 Difference]: Finished difference Result 11341 states and 18731 transitions. [2024-11-24 00:34:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:34:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 151 [2024-11-24 00:34:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:50,602 INFO L225 Difference]: With dead ends: 11341 [2024-11-24 00:34:50,602 INFO L226 Difference]: Without dead ends: 8213 [2024-11-24 00:34:50,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:34:50,620 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 2383 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 5297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:50,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 2747 Invalid, 5297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 4780 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 00:34:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2024-11-24 00:34:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7726. [2024-11-24 00:34:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7726 states, 5927 states have (on average 1.6288172768685676) internal successors, (9654), 6112 states have internal predecessors, (9654), 1362 states have call successors, (1362), 353 states have call predecessors, (1362), 436 states have return successors, (1641), 1326 states have call predecessors, (1641), 1357 states have call successors, (1641) [2024-11-24 00:34:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7726 states to 7726 states and 12657 transitions. [2024-11-24 00:34:51,186 INFO L78 Accepts]: Start accepts. Automaton has 7726 states and 12657 transitions. Word has length 151 [2024-11-24 00:34:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:51,186 INFO L471 AbstractCegarLoop]: Abstraction has 7726 states and 12657 transitions. [2024-11-24 00:34:51,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:34:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 7726 states and 12657 transitions. [2024-11-24 00:34:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:34:51,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:51,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:51,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:34:51,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:51,397 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:51,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1032812840, now seen corresponding path program 1 times [2024-11-24 00:34:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:51,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070905965] [2024-11-24 00:34:51,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:34:51,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:51,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070905965] [2024-11-24 00:34:51,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070905965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:51,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948856045] [2024-11-24 00:34:51,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:51,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:51,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:51,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:34:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:52,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:34:52,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:34:52,530 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948856045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:52,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:52,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 00:34:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388406752] [2024-11-24 00:34:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:52,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:34:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:52,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:34:52,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:34:52,531 INFO L87 Difference]: Start difference. First operand 7726 states and 12657 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 00:34:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:55,953 INFO L93 Difference]: Finished difference Result 16788 states and 27692 transitions. [2024-11-24 00:34:55,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:34:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2024-11-24 00:34:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:56,010 INFO L225 Difference]: With dead ends: 16788 [2024-11-24 00:34:56,010 INFO L226 Difference]: Without dead ends: 9113 [2024-11-24 00:34:56,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:34:56,041 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 2132 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 3444 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 3932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 3444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:56,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 2180 Invalid, 3932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 3444 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 00:34:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9113 states. [2024-11-24 00:34:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9113 to 8164. [2024-11-24 00:34:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8164 states, 6245 states have (on average 1.6160128102481985) internal successors, (10092), 6466 states have internal predecessors, (10092), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 508 states have return successors, (1805), 1380 states have call predecessors, (1805), 1405 states have call successors, (1805) [2024-11-24 00:34:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8164 states to 8164 states and 13307 transitions. [2024-11-24 00:34:56,602 INFO L78 Accepts]: Start accepts. Automaton has 8164 states and 13307 transitions. Word has length 153 [2024-11-24 00:34:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 8164 states and 13307 transitions. [2024-11-24 00:34:56,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 00:34:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8164 states and 13307 transitions. [2024-11-24 00:34:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:34:56,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:56,610 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:56,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:34:56,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:34:56,814 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:56,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash -214871749, now seen corresponding path program 1 times [2024-11-24 00:34:56,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:56,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282914767] [2024-11-24 00:34:56,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:34:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282914767] [2024-11-24 00:34:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282914767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053504304] [2024-11-24 00:34:57,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:57,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:57,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:57,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:57,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:34:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:57,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:34:57,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:34:57,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:34:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053504304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:57,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:34:57,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-24 00:34:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107389567] [2024-11-24 00:34:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:57,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:57,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:57,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:57,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:34:57,656 INFO L87 Difference]: Start difference. First operand 8164 states and 13307 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:34:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:58,137 INFO L93 Difference]: Finished difference Result 20530 states and 33871 transitions. [2024-11-24 00:34:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-24 00:34:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:58,211 INFO L225 Difference]: With dead ends: 20530 [2024-11-24 00:34:58,211 INFO L226 Difference]: Without dead ends: 12420 [2024-11-24 00:34:58,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:34:58,241 INFO L435 NwaCegarLoop]: 1563 mSDtfsCounter, 817 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:58,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 2430 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12420 states. [2024-11-24 00:34:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12420 to 8140. [2024-11-24 00:34:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 6233 states have (on average 1.6152735440397883) internal successors, (10068), 6442 states have internal predecessors, (10068), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 496 states have return successors, (1751), 1380 states have call predecessors, (1751), 1405 states have call successors, (1751) [2024-11-24 00:34:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 13229 transitions. [2024-11-24 00:34:58,855 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 13229 transitions. Word has length 158 [2024-11-24 00:34:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:58,855 INFO L471 AbstractCegarLoop]: Abstraction has 8140 states and 13229 transitions. [2024-11-24 00:34:58,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:34:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 13229 transitions. [2024-11-24 00:34:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:34:58,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:58,863 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:58,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:34:59,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:34:59,065 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:59,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 678614589, now seen corresponding path program 1 times [2024-11-24 00:34:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792642815] [2024-11-24 00:34:59,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:34:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792642815] [2024-11-24 00:34:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792642815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750665686] [2024-11-24 00:34:59,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:59,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:59,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:59,645 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:59,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:35:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:00,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:35:00,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:35:00,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:35:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750665686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:00,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:35:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:35:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225367425] [2024-11-24 00:35:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:00,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:00,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:00,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:35:00,272 INFO L87 Difference]: Start difference. First operand 8140 states and 13229 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:02,963 INFO L93 Difference]: Finished difference Result 21746 states and 35962 transitions. [2024-11-24 00:35:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:35:02,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2024-11-24 00:35:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:03,045 INFO L225 Difference]: With dead ends: 21746 [2024-11-24 00:35:03,045 INFO L226 Difference]: Without dead ends: 13651 [2024-11-24 00:35:03,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:35:03,081 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1925 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:03,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 938 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 00:35:03,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13651 states. [2024-11-24 00:35:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13651 to 13061. [2024-11-24 00:35:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13061 states, 9887 states have (on average 1.6051380600788914) internal successors, (15870), 10267 states have internal predecessors, (15870), 2370 states have call successors, (2370), 596 states have call predecessors, (2370), 803 states have return successors, (3185), 2359 states have call predecessors, (3185), 2365 states have call successors, (3185) [2024-11-24 00:35:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13061 states to 13061 states and 21425 transitions. [2024-11-24 00:35:04,042 INFO L78 Accepts]: Start accepts. Automaton has 13061 states and 21425 transitions. Word has length 158 [2024-11-24 00:35:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:04,043 INFO L471 AbstractCegarLoop]: Abstraction has 13061 states and 21425 transitions. [2024-11-24 00:35:04,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13061 states and 21425 transitions. [2024-11-24 00:35:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 00:35:04,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:04,049 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:04,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:35:04,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:35:04,254 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:04,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash -438065141, now seen corresponding path program 1 times [2024-11-24 00:35:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034007506] [2024-11-24 00:35:04,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:35:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034007506] [2024-11-24 00:35:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034007506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337892593] [2024-11-24 00:35:04,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:04,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:04,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:35:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:05,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:35:05,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:35:05,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:35:05,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337892593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:05,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:35:05,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:35:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192599869] [2024-11-24 00:35:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:05,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:05,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:05,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:35:05,409 INFO L87 Difference]: Start difference. First operand 13061 states and 21425 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:08,427 INFO L93 Difference]: Finished difference Result 37961 states and 64386 transitions. [2024-11-24 00:35:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:35:08,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2024-11-24 00:35:08,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:08,528 INFO L225 Difference]: With dead ends: 37961 [2024-11-24 00:35:08,528 INFO L226 Difference]: Without dead ends: 24945 [2024-11-24 00:35:08,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:35:08,578 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 1928 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:08,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 909 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:35:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24945 states. [2024-11-24 00:35:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24945 to 23886. [2024-11-24 00:35:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23886 states, 17780 states have (on average 1.594488188976378) internal successors, (28350), 18574 states have internal predecessors, (28350), 4646 states have call successors, (4646), 1022 states have call predecessors, (4646), 1459 states have return successors, (7091), 4697 states have call predecessors, (7091), 4641 states have call successors, (7091) [2024-11-24 00:35:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23886 states to 23886 states and 40087 transitions. [2024-11-24 00:35:10,842 INFO L78 Accepts]: Start accepts. Automaton has 23886 states and 40087 transitions. Word has length 159 [2024-11-24 00:35:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:10,843 INFO L471 AbstractCegarLoop]: Abstraction has 23886 states and 40087 transitions. [2024-11-24 00:35:10,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23886 states and 40087 transitions. [2024-11-24 00:35:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:35:10,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:10,850 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:10,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:35:11,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:35:11,055 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:11,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:11,055 INFO L85 PathProgramCache]: Analyzing trace with hash -695394497, now seen corresponding path program 1 times [2024-11-24 00:35:11,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265317356] [2024-11-24 00:35:11,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:35:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265317356] [2024-11-24 00:35:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265317356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023962086] [2024-11-24 00:35:11,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:11,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:11,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:35:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:11,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:35:11,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:35:12,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:35:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023962086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:12,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:35:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:35:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26072349] [2024-11-24 00:35:12,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:12,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:12,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:12,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:35:12,010 INFO L87 Difference]: Start difference. First operand 23886 states and 40087 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:17,108 INFO L93 Difference]: Finished difference Result 74031 states and 131671 transitions. [2024-11-24 00:35:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:35:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-11-24 00:35:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:17,477 INFO L225 Difference]: With dead ends: 74031 [2024-11-24 00:35:17,477 INFO L226 Difference]: Without dead ends: 50190 [2024-11-24 00:35:17,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:35:17,773 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 1915 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:17,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 905 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:35:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50190 states. [2024-11-24 00:35:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50190 to 48158. [2024-11-24 00:35:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48158 states, 35119 states have (on average 1.5833594350636409) internal successors, (55606), 36927 states have internal predecessors, (55606), 10159 states have call successors, (10159), 1874 states have call predecessors, (10159), 2879 states have return successors, (18318), 10406 states have call predecessors, (18318), 10154 states have call successors, (18318) [2024-11-24 00:35:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48158 states to 48158 states and 84083 transitions. [2024-11-24 00:35:21,935 INFO L78 Accepts]: Start accepts. Automaton has 48158 states and 84083 transitions. Word has length 160 [2024-11-24 00:35:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 48158 states and 84083 transitions. [2024-11-24 00:35:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 48158 states and 84083 transitions. [2024-11-24 00:35:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:35:21,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:21,945 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:21,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 00:35:22,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:35:22,146 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:22,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -82666035, now seen corresponding path program 1 times [2024-11-24 00:35:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921368182] [2024-11-24 00:35:22,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:35:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921368182] [2024-11-24 00:35:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921368182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004478897] [2024-11-24 00:35:22,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:22,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:22,667 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:22,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9a8dae-327d-46f6-832d-87465f5ca4f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:35:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:23,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:35:23,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:35:23,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:35:23,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004478897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:23,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:35:23,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:35:23,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36744945] [2024-11-24 00:35:23,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:23,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:23,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:23,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:35:23,250 INFO L87 Difference]: Start difference. First operand 48158 states and 84083 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 00:35:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:33,169 INFO L93 Difference]: Finished difference Result 155928 states and 299796 transitions. [2024-11-24 00:35:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:35:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2024-11-24 00:35:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:34,022 INFO L225 Difference]: With dead ends: 155928 [2024-11-24 00:35:34,023 INFO L226 Difference]: Without dead ends: 107815 [2024-11-24 00:35:34,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:35:34,383 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1902 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:34,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 904 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:35:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107815 states.