./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB --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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:31:31,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:31:31,114 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:31:31,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:31:31,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:31:31,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:31:31,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:31:31,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:31:31,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:31:31,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:31:31,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:31:31,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:31:31,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:31:31,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:31:31,163 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:31:31,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:31:31,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:31:31,165 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:31:31,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:31:31,165 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:31:31,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:31,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:31,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:31,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:31,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:31:31,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:31,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:31,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:31:31,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:31:31,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:31:31,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:31:31,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:31:31,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:31:31,168 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_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB 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 -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2024-11-27 23:31:31,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:31:31,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:31:31,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:31:31,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:31:31,515 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:31:31,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2024-11-27 23:31:34,387 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/data/e1df8823d/e5f97d72c82f4d32a52f4d981f7d8ff6/FLAG32819633c [2024-11-27 23:31:34,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:31:34,866 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2024-11-27 23:31:34,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/data/e1df8823d/e5f97d72c82f4d32a52f4d981f7d8ff6/FLAG32819633c [2024-11-27 23:31:34,920 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/data/e1df8823d/e5f97d72c82f4d32a52f4d981f7d8ff6 [2024-11-27 23:31:34,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:31:34,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:31:34,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:34,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:31:34,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:31:34,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:34" (1/1) ... [2024-11-27 23:31:34,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1ccb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:34, skipping insertion in model container [2024-11-27 23:31:34,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:34" (1/1) ... [2024-11-27 23:31:35,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:31:35,565 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_b31e57a2-d606-4df2-8212-600be1b44113/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2024-11-27 23:31:35,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:35,651 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:31:35,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-27 23:31:35,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-11-27 23:31:35,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2024-11-27 23:31:35,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2024-11-27 23:31:35,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2024-11-27 23:31:35,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2024-11-27 23:31:35,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2024-11-27 23:31:35,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2024-11-27 23:31:35,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2024-11-27 23:31:35,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2024-11-27 23:31:35,802 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_b31e57a2-d606-4df2-8212-600be1b44113/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2024-11-27 23:31:35,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:35,877 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:31:35,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35 WrapperNode [2024-11-27 23:31:35,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:35,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:35,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:31:35,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:31:35,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:35,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:35,983 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 816 [2024-11-27 23:31:35,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:35,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:31:35,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:31:35,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:31:35,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,057 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]. [2024-11-27 23:31:36,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,076 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:31:36,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:31:36,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:31:36,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:31:36,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (1/1) ... [2024-11-27 23:31:36,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:36,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:36,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:31:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-27 23:31:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-27 23:31:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 23:31:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-27 23:31:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 23:31:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 23:31:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 23:31:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 23:31:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 23:31:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 23:31:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 23:31:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 23:31:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:31:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 23:31:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 23:31:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 23:31:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 23:31:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 23:31:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 23:31:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 23:31:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-27 23:31:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-27 23:31:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:31:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:31:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 23:31:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 23:31:36,426 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:31:36,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:31:37,953 INFO L? ?]: Removed 460 outVars from TransFormulas that were not future-live. [2024-11-27 23:31:37,953 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:31:37,985 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:31:37,985 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 23:31:37,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:37 BoogieIcfgContainer [2024-11-27 23:31:37,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:31:37,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:31:37,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:31:37,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:31:37,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:31:34" (1/3) ... [2024-11-27 23:31:37,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:37, skipping insertion in model container [2024-11-27 23:31:37,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:35" (2/3) ... [2024-11-27 23:31:37,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:37, skipping insertion in model container [2024-11-27 23:31:37,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:37" (3/3) ... [2024-11-27 23:31:37,997 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2024-11-27 23:31:38,013 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:31:38,016 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product21.cil.c that has 26 procedures, 588 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 23:31:38,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:38,106 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;@2f26822c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:38,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:31:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 461 states have (on average 1.6984815618221258) internal successors, (783), 479 states have internal predecessors, (783), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 23:31:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 23:31:38,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:38,145 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:38,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:38,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash -289572878, now seen corresponding path program 1 times [2024-11-27 23:31:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517353750] [2024-11-27 23:31:38,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:31:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:39,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517353750] [2024-11-27 23:31:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517353750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067398912] [2024-11-27 23:31:39,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:39,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:39,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:39,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:31:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:39,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:31:39,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:31:39,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067398912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:39,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-27 23:31:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397612511] [2024-11-27 23:31:39,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:39,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:39,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:39,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:39,745 INFO L87 Difference]: Start difference. First operand has 588 states, 461 states have (on average 1.6984815618221258) internal successors, (783), 479 states have internal predecessors, (783), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:39,859 INFO L93 Difference]: Finished difference Result 1154 states and 1949 transitions. [2024-11-27 23:31:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:39,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-27 23:31:39,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:39,881 INFO L225 Difference]: With dead ends: 1154 [2024-11-27 23:31:39,881 INFO L226 Difference]: Without dead ends: 578 [2024-11-27 23:31:39,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:39,894 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:39,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-27 23:31:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-27 23:31:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 454 states have (on average 1.6806167400881058) internal successors, (763), 470 states have internal predecessors, (763), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-27 23:31:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 960 transitions. [2024-11-27 23:31:40,031 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 960 transitions. Word has length 114 [2024-11-27 23:31:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:40,033 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 960 transitions. [2024-11-27 23:31:40,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 960 transitions. [2024-11-27 23:31:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 23:31:40,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:40,050 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:40,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:31:40,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:31:40,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:40,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1551983438, now seen corresponding path program 1 times [2024-11-27 23:31:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750594495] [2024-11-27 23:31:40,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:31:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750594495] [2024-11-27 23:31:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750594495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:40,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457703916] [2024-11-27 23:31:40,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:40,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:40,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:40,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:40,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:31:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:41,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:41,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:41,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457703916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:41,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:41,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-27 23:31:41,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960174698] [2024-11-27 23:31:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:41,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:41,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:41,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:31:41,296 INFO L87 Difference]: Start difference. First operand 578 states and 960 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:41,497 INFO L93 Difference]: Finished difference Result 1157 states and 1928 transitions. [2024-11-27 23:31:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-27 23:31:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:41,506 INFO L225 Difference]: With dead ends: 1157 [2024-11-27 23:31:41,507 INFO L226 Difference]: Without dead ends: 587 [2024-11-27 23:31:41,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:31:41,512 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 17 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:41,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2833 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-27 23:31:41,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-27 23:31:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 462 states have (on average 1.6818181818181819) internal successors, (777), 478 states have internal predecessors, (777), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-27 23:31:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 974 transitions. [2024-11-27 23:31:41,569 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 974 transitions. Word has length 114 [2024-11-27 23:31:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:41,571 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 974 transitions. [2024-11-27 23:31:41,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 974 transitions. [2024-11-27 23:31:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:31:41,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:41,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:41,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:41,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:41,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:41,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1383911876, now seen corresponding path program 1 times [2024-11-27 23:31:41,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:41,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672420605] [2024-11-27 23:31:41,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672420605] [2024-11-27 23:31:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672420605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206169108] [2024-11-27 23:31:42,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:42,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:42,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:42,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:31:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:42,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:42,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:42,615 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206169108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-27 23:31:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998297340] [2024-11-27 23:31:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:42,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:42,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:42,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:42,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:31:42,617 INFO L87 Difference]: Start difference. First operand 587 states and 974 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:42,995 INFO L93 Difference]: Finished difference Result 1227 states and 2052 transitions. [2024-11-27 23:31:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:42,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-11-27 23:31:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:43,001 INFO L225 Difference]: With dead ends: 1227 [2024-11-27 23:31:43,001 INFO L226 Difference]: Without dead ends: 650 [2024-11-27 23:31:43,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:31:43,005 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 122 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:43,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2728 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:31:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-27 23:31:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 632. [2024-11-27 23:31:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.7015810276679841) internal successors, (861), 522 states have internal predecessors, (861), 100 states have call successors, (100), 27 states have call predecessors, (100), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-27 23:31:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1058 transitions. [2024-11-27 23:31:43,045 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1058 transitions. Word has length 116 [2024-11-27 23:31:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:43,045 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 1058 transitions. [2024-11-27 23:31:43,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1058 transitions. [2024-11-27 23:31:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 23:31:43,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:43,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:43,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:31:43,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:43,252 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:43,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1111598688, now seen corresponding path program 1 times [2024-11-27 23:31:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837820048] [2024-11-27 23:31:43,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837820048] [2024-11-27 23:31:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837820048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053328008] [2024-11-27 23:31:43,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:43,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:43,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:43,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:43,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:31:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:44,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:31:44,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:44,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:44,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053328008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:44,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:44,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:31:44,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863428289] [2024-11-27 23:31:44,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:44,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:31:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:44,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:31:44,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:44,092 INFO L87 Difference]: Start difference. First operand 632 states and 1058 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:44,274 INFO L93 Difference]: Finished difference Result 1279 states and 2143 transitions. [2024-11-27 23:31:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2024-11-27 23:31:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:44,280 INFO L225 Difference]: With dead ends: 1279 [2024-11-27 23:31:44,280 INFO L226 Difference]: Without dead ends: 657 [2024-11-27 23:31:44,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:44,285 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 89 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:44,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5590 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-27 23:31:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 645. [2024-11-27 23:31:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 516 states have (on average 1.697674418604651) internal successors, (876), 534 states have internal predecessors, (876), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-27 23:31:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1079 transitions. [2024-11-27 23:31:44,321 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1079 transitions. Word has length 118 [2024-11-27 23:31:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:44,322 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1079 transitions. [2024-11-27 23:31:44,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1079 transitions. [2024-11-27 23:31:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:31:44,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:44,327 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:44,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:31:44,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:44,528 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:44,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -750345567, now seen corresponding path program 1 times [2024-11-27 23:31:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788994002] [2024-11-27 23:31:44,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788994002] [2024-11-27 23:31:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788994002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:44,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954425462] [2024-11-27 23:31:44,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:44,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:44,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:44,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:31:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:45,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:31:45,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:45,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954425462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:45,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:45,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:31:45,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673758975] [2024-11-27 23:31:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:45,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:31:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:45,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:31:45,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:45,318 INFO L87 Difference]: Start difference. First operand 645 states and 1079 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:45,508 INFO L93 Difference]: Finished difference Result 1299 states and 2174 transitions. [2024-11-27 23:31:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:45,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-11-27 23:31:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:45,514 INFO L225 Difference]: With dead ends: 1299 [2024-11-27 23:31:45,514 INFO L226 Difference]: Without dead ends: 666 [2024-11-27 23:31:45,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:45,519 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 100 mSDsluCounter, 4631 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:45,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5578 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-27 23:31:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2024-11-27 23:31:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 516 states have (on average 1.697674418604651) internal successors, (876), 534 states have internal predecessors, (876), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-27 23:31:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1079 transitions. [2024-11-27 23:31:45,564 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1079 transitions. Word has length 119 [2024-11-27 23:31:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:45,564 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1079 transitions. [2024-11-27 23:31:45,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1079 transitions. [2024-11-27 23:31:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:31:45,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:45,569 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:45,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:31:45,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:45,770 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:45,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1854080965, now seen corresponding path program 1 times [2024-11-27 23:31:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438251782] [2024-11-27 23:31:45,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:31:45,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438251782] [2024-11-27 23:31:45,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438251782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194434206] [2024-11-27 23:31:45,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:45,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:45,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:31:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:46,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:46,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:31:46,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:46,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194434206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:46,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:46,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:31:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405261452] [2024-11-27 23:31:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:46,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:46,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:46,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:46,327 INFO L87 Difference]: Start difference. First operand 645 states and 1079 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:46,450 INFO L93 Difference]: Finished difference Result 1293 states and 2164 transitions. [2024-11-27 23:31:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-27 23:31:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:46,457 INFO L225 Difference]: With dead ends: 1293 [2024-11-27 23:31:46,458 INFO L226 Difference]: Without dead ends: 656 [2024-11-27 23:31:46,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:31:46,462 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 12 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:46,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2835 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-27 23:31:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2024-11-27 23:31:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 542 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1087 transitions. [2024-11-27 23:31:46,504 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1087 transitions. Word has length 119 [2024-11-27 23:31:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:46,504 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1087 transitions. [2024-11-27 23:31:46,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1087 transitions. [2024-11-27 23:31:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 23:31:46,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:46,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:46,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:46,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 23:31:46,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:46,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1653770012, now seen corresponding path program 1 times [2024-11-27 23:31:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76728080] [2024-11-27 23:31:46,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76728080] [2024-11-27 23:31:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76728080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:46,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093724755] [2024-11-27 23:31:46,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:46,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:46,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:46,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:31:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:47,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:31:47,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:47,402 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:47,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093724755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:47,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:31:47,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452996131] [2024-11-27 23:31:47,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:47,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:31:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:47,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:31:47,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:47,406 INFO L87 Difference]: Start difference. First operand 654 states and 1087 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:47,612 INFO L93 Difference]: Finished difference Result 1308 states and 2177 transitions. [2024-11-27 23:31:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-27 23:31:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:47,620 INFO L225 Difference]: With dead ends: 1308 [2024-11-27 23:31:47,620 INFO L226 Difference]: Without dead ends: 677 [2024-11-27 23:31:47,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:47,626 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 111 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:47,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5566 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-27 23:31:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 654. [2024-11-27 23:31:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 542 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1087 transitions. [2024-11-27 23:31:47,675 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1087 transitions. Word has length 120 [2024-11-27 23:31:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:47,675 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1087 transitions. [2024-11-27 23:31:47,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1087 transitions. [2024-11-27 23:31:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 23:31:47,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:47,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:47,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:31:47,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:47,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:47,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1725760474, now seen corresponding path program 1 times [2024-11-27 23:31:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22553150] [2024-11-27 23:31:47,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:47,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:48,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22553150] [2024-11-27 23:31:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22553150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926936252] [2024-11-27 23:31:48,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:48,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:48,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:48,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:48,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:31:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:48,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:48,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:48,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926936252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:48,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:31:48,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445870914] [2024-11-27 23:31:48,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:48,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:31:48,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:48,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:31:48,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:48,602 INFO L87 Difference]: Start difference. First operand 654 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:48,840 INFO L93 Difference]: Finished difference Result 1311 states and 2181 transitions. [2024-11-27 23:31:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:31:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-27 23:31:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:48,846 INFO L225 Difference]: With dead ends: 1311 [2024-11-27 23:31:48,846 INFO L226 Difference]: Without dead ends: 680 [2024-11-27 23:31:48,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:31:48,850 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 95 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6462 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:48,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6462 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-27 23:31:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 654. [2024-11-27 23:31:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 542 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1087 transitions. [2024-11-27 23:31:48,884 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1087 transitions. Word has length 120 [2024-11-27 23:31:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:48,885 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1087 transitions. [2024-11-27 23:31:48,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1087 transitions. [2024-11-27 23:31:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 23:31:48,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:48,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:48,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:49,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:49,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:49,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1346977059, now seen corresponding path program 1 times [2024-11-27 23:31:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627156221] [2024-11-27 23:31:49,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627156221] [2024-11-27 23:31:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627156221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221206806] [2024-11-27 23:31:49,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:49,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:49,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:49,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:49,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:31:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:49,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:49,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:49,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221206806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:31:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645214691] [2024-11-27 23:31:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:49,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:31:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:49,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:31:49,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:49,728 INFO L87 Difference]: Start difference. First operand 654 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:49,946 INFO L93 Difference]: Finished difference Result 1311 states and 2181 transitions. [2024-11-27 23:31:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:31:49,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2024-11-27 23:31:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:49,953 INFO L225 Difference]: With dead ends: 1311 [2024-11-27 23:31:49,953 INFO L226 Difference]: Without dead ends: 680 [2024-11-27 23:31:49,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:31:49,958 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 105 mSDsluCounter, 5513 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6450 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:49,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6450 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-27 23:31:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 654. [2024-11-27 23:31:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 542 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1087 transitions. [2024-11-27 23:31:50,025 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1087 transitions. Word has length 121 [2024-11-27 23:31:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:50,025 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1087 transitions. [2024-11-27 23:31:50,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1087 transitions. [2024-11-27 23:31:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 23:31:50,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:50,031 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:50,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:31:50,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:50,236 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:50,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1711366357, now seen corresponding path program 1 times [2024-11-27 23:31:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:50,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771323920] [2024-11-27 23:31:50,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771323920] [2024-11-27 23:31:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771323920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183545603] [2024-11-27 23:31:50,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:50,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:50,413 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:50,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:31:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:50,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:50,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:31:50,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183545603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:31:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854395206] [2024-11-27 23:31:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:50,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:31:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:50,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:31:50,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:31:50,866 INFO L87 Difference]: Start difference. First operand 654 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:51,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:51,077 INFO L93 Difference]: Finished difference Result 1302 states and 2166 transitions. [2024-11-27 23:31:51,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:31:51,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2024-11-27 23:31:51,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:51,084 INFO L225 Difference]: With dead ends: 1302 [2024-11-27 23:31:51,084 INFO L226 Difference]: Without dead ends: 671 [2024-11-27 23:31:51,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:31:51,088 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 115 mSDsluCounter, 5501 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:51,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6438 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-27 23:31:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 654. [2024-11-27 23:31:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 542 states have internal predecessors, (885), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1087 transitions. [2024-11-27 23:31:51,120 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1087 transitions. Word has length 122 [2024-11-27 23:31:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:51,120 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1087 transitions. [2024-11-27 23:31:51,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1087 transitions. [2024-11-27 23:31:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 23:31:51,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:51,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:51,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:51,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:51,329 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:51,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 362157239, now seen corresponding path program 1 times [2024-11-27 23:31:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:51,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371703779] [2024-11-27 23:31:51,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:31:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371703779] [2024-11-27 23:31:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371703779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487602151] [2024-11-27 23:31:51,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:51,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:51,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:51,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:31:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:51,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:51,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:31:51,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487602151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:31:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170804114] [2024-11-27 23:31:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:51,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:51,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:51,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:51,817 INFO L87 Difference]: Start difference. First operand 654 states and 1087 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:51,916 INFO L93 Difference]: Finished difference Result 1274 states and 2126 transitions. [2024-11-27 23:31:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-27 23:31:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:51,922 INFO L225 Difference]: With dead ends: 1274 [2024-11-27 23:31:51,922 INFO L226 Difference]: Without dead ends: 654 [2024-11-27 23:31:51,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:31:51,928 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 20 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:51,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2829 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-27 23:31:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2024-11-27 23:31:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 524 states have (on average 1.6793893129770991) internal successors, (880), 542 states have internal predecessors, (880), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 23:31:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1082 transitions. [2024-11-27 23:31:51,959 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1082 transitions. Word has length 122 [2024-11-27 23:31:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1082 transitions. [2024-11-27 23:31:51,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1082 transitions. [2024-11-27 23:31:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 23:31:51,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:51,966 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:51,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:52,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:52,167 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:52,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1032954792, now seen corresponding path program 1 times [2024-11-27 23:31:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:52,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483422812] [2024-11-27 23:31:52,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:31:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483422812] [2024-11-27 23:31:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483422812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993322066] [2024-11-27 23:31:52,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:52,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:52,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:52,272 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:52,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:31:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:52,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:52,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:31:52,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993322066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:52,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:31:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029020622] [2024-11-27 23:31:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:52,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:52,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:52,678 INFO L87 Difference]: Start difference. First operand 654 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:52,905 INFO L93 Difference]: Finished difference Result 1303 states and 2166 transitions. [2024-11-27 23:31:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-27 23:31:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:52,911 INFO L225 Difference]: With dead ends: 1303 [2024-11-27 23:31:52,912 INFO L226 Difference]: Without dead ends: 741 [2024-11-27 23:31:52,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:31:52,915 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 171 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:52,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2701 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:31:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-27 23:31:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 699. [2024-11-27 23:31:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 568 states have (on average 1.6971830985915493) internal successors, (964), 586 states have internal predecessors, (964), 101 states have call successors, (101), 29 states have call predecessors, (101), 29 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-27 23:31:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1165 transitions. [2024-11-27 23:31:52,945 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1165 transitions. Word has length 123 [2024-11-27 23:31:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:52,946 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1165 transitions. [2024-11-27 23:31:52,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1165 transitions. [2024-11-27 23:31:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:31:52,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:52,950 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:52,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:31:53,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:31:53,151 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:53,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1040459453, now seen corresponding path program 1 times [2024-11-27 23:31:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:53,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203643974] [2024-11-27 23:31:53,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:31:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203643974] [2024-11-27 23:31:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203643974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748743315] [2024-11-27 23:31:53,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:53,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:53,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:31:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:53,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:31:53,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:53,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748743315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:53,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:53,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:31:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452690319] [2024-11-27 23:31:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:53,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:31:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:53,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:31:53,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:31:53,686 INFO L87 Difference]: Start difference. First operand 699 states and 1165 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:53,813 INFO L93 Difference]: Finished difference Result 1296 states and 2153 transitions. [2024-11-27 23:31:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-11-27 23:31:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:53,819 INFO L225 Difference]: With dead ends: 1296 [2024-11-27 23:31:53,819 INFO L226 Difference]: Without dead ends: 734 [2024-11-27 23:31:53,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:31:53,824 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 89 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:53,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5599 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-27 23:31:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 712. [2024-11-27 23:31:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 578 states have (on average 1.693771626297578) internal successors, (979), 598 states have internal predecessors, (979), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1184 transitions. [2024-11-27 23:31:53,860 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1184 transitions. Word has length 124 [2024-11-27 23:31:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:53,860 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 1184 transitions. [2024-11-27 23:31:53,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1184 transitions. [2024-11-27 23:31:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:31:53,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:53,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:53,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:31:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:31:54,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1349523858, now seen corresponding path program 1 times [2024-11-27 23:31:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762857169] [2024-11-27 23:31:54,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762857169] [2024-11-27 23:31:54,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762857169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229950591] [2024-11-27 23:31:54,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:54,165 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:54,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:31:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:54,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:31:54,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:54,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:54,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229950591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:54,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:54,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:31:54,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673931713] [2024-11-27 23:31:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:54,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:31:54,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:54,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:31:54,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:31:54,580 INFO L87 Difference]: Start difference. First operand 712 states and 1184 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:54,710 INFO L93 Difference]: Finished difference Result 1305 states and 2167 transitions. [2024-11-27 23:31:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-27 23:31:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:54,716 INFO L225 Difference]: With dead ends: 1305 [2024-11-27 23:31:54,717 INFO L226 Difference]: Without dead ends: 743 [2024-11-27 23:31:54,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:31:54,721 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 100 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:54,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5587 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-27 23:31:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 712. [2024-11-27 23:31:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 578 states have (on average 1.693771626297578) internal successors, (979), 598 states have internal predecessors, (979), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1184 transitions. [2024-11-27 23:31:54,756 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1184 transitions. Word has length 125 [2024-11-27 23:31:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:54,758 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 1184 transitions. [2024-11-27 23:31:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1184 transitions. [2024-11-27 23:31:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:31:54,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:54,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:54,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:31:54,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:31:54,964 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:54,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -629437166, now seen corresponding path program 1 times [2024-11-27 23:31:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896533192] [2024-11-27 23:31:54,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896533192] [2024-11-27 23:31:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896533192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281070690] [2024-11-27 23:31:55,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:55,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:55,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:55,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:31:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:55,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:55,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:55,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:55,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281070690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:55,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:55,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:31:55,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41914949] [2024-11-27 23:31:55,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:55,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:31:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:55,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:31:55,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:31:55,542 INFO L87 Difference]: Start difference. First operand 712 states and 1184 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:55,740 INFO L93 Difference]: Finished difference Result 1308 states and 2170 transitions. [2024-11-27 23:31:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:31:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-27 23:31:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:55,746 INFO L225 Difference]: With dead ends: 1308 [2024-11-27 23:31:55,747 INFO L226 Difference]: Without dead ends: 746 [2024-11-27 23:31:55,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:55,752 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 96 mSDsluCounter, 5534 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:55,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6472 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-27 23:31:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 712. [2024-11-27 23:31:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 578 states have (on average 1.693771626297578) internal successors, (979), 598 states have internal predecessors, (979), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1184 transitions. [2024-11-27 23:31:55,789 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1184 transitions. Word has length 125 [2024-11-27 23:31:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:55,789 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 1184 transitions. [2024-11-27 23:31:55,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1184 transitions. [2024-11-27 23:31:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:31:55,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:55,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:55,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:31:55,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:31:55,994 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:55,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1040175272, now seen corresponding path program 1 times [2024-11-27 23:31:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:55,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149826999] [2024-11-27 23:31:55,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:31:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:56,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149826999] [2024-11-27 23:31:56,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149826999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:56,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402685751] [2024-11-27 23:31:56,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:56,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:56,098 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:56,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:31:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:56,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:56,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:31:56,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402685751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:56,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:56,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:31:56,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924940846] [2024-11-27 23:31:56,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:56,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:56,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:56,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:56,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:56,469 INFO L87 Difference]: Start difference. First operand 712 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:56,527 INFO L93 Difference]: Finished difference Result 1350 states and 2249 transitions. [2024-11-27 23:31:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-27 23:31:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:56,533 INFO L225 Difference]: With dead ends: 1350 [2024-11-27 23:31:56,533 INFO L226 Difference]: Without dead ends: 712 [2024-11-27 23:31:56,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:56,536 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 2 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:56,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2838 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-27 23:31:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2024-11-27 23:31:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 578 states have (on average 1.6885813148788926) internal successors, (976), 598 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1181 transitions. [2024-11-27 23:31:56,566 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1181 transitions. Word has length 125 [2024-11-27 23:31:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:56,567 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 1181 transitions. [2024-11-27 23:31:56,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1181 transitions. [2024-11-27 23:31:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:31:56,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:56,571 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:56,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:31:56,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:31:56,772 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:56,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2001282497, now seen corresponding path program 1 times [2024-11-27 23:31:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177272921] [2024-11-27 23:31:56,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:56,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:56,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177272921] [2024-11-27 23:31:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177272921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507122984] [2024-11-27 23:31:56,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:56,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:56,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:56,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:56,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:31:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:57,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:57,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:57,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:57,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507122984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:57,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:31:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261229452] [2024-11-27 23:31:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:31:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:57,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:31:57,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:31:57,309 INFO L87 Difference]: Start difference. First operand 712 states and 1181 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:57,500 INFO L93 Difference]: Finished difference Result 1299 states and 2153 transitions. [2024-11-27 23:31:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:31:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-11-27 23:31:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:57,506 INFO L225 Difference]: With dead ends: 1299 [2024-11-27 23:31:57,506 INFO L226 Difference]: Without dead ends: 737 [2024-11-27 23:31:57,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:57,510 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 106 mSDsluCounter, 5507 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6442 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:57,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6442 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:31:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-27 23:31:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 712. [2024-11-27 23:31:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 578 states have (on average 1.6885813148788926) internal successors, (976), 598 states have internal predecessors, (976), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1181 transitions. [2024-11-27 23:31:57,573 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1181 transitions. Word has length 126 [2024-11-27 23:31:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:57,573 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 1181 transitions. [2024-11-27 23:31:57,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:31:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1181 transitions. [2024-11-27 23:31:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:31:57,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:57,582 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:57,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:57,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:31:57,783 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:57,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -248169715, now seen corresponding path program 1 times [2024-11-27 23:31:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796310031] [2024-11-27 23:31:57,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796310031] [2024-11-27 23:31:57,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796310031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575182191] [2024-11-27 23:31:57,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:57,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:57,880 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:31:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:58,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:58,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:31:58,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:58,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575182191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:58,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:58,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:31:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479266923] [2024-11-27 23:31:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:58,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:58,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:58,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:58,275 INFO L87 Difference]: Start difference. First operand 712 states and 1181 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:58,336 INFO L93 Difference]: Finished difference Result 1291 states and 2153 transitions. [2024-11-27 23:31:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:31:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-27 23:31:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:58,342 INFO L225 Difference]: With dead ends: 1291 [2024-11-27 23:31:58,342 INFO L226 Difference]: Without dead ends: 733 [2024-11-27 23:31:58,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:31:58,345 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 54 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:58,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2874 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-27 23:31:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2024-11-27 23:31:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 598 states have (on average 1.6889632107023411) internal successors, (1010), 618 states have internal predecessors, (1010), 102 states have call successors, (102), 30 states have call predecessors, (102), 32 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-27 23:31:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2024-11-27 23:31:58,376 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 127 [2024-11-27 23:31:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:58,376 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2024-11-27 23:31:58,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:31:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2024-11-27 23:31:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:31:58,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:58,380 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:58,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:31:58,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:31:58,581 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:58,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 142638812, now seen corresponding path program 1 times [2024-11-27 23:31:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:58,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312749850] [2024-11-27 23:31:58,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:31:58,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312749850] [2024-11-27 23:31:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312749850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409680643] [2024-11-27 23:31:58,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:58,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:58,675 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:58,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:31:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:58,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:59,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:31:59,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409680643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:59,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:59,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-27 23:31:59,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115718850] [2024-11-27 23:31:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:59,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:31:59,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:59,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:31:59,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:31:59,059 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:00,312 INFO L93 Difference]: Finished difference Result 2408 states and 4076 transitions. [2024-11-27 23:32:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:00,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2024-11-27 23:32:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:00,331 INFO L225 Difference]: With dead ends: 2408 [2024-11-27 23:32:00,331 INFO L226 Difference]: Without dead ends: 1829 [2024-11-27 23:32:00,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:00,337 INFO L435 NwaCegarLoop]: 1082 mSDtfsCounter, 2344 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:00,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 3289 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:32:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2024-11-27 23:32:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1815. [2024-11-27 23:32:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1465 states have (on average 1.663481228668942) internal successors, (2437), 1513 states have internal predecessors, (2437), 271 states have call successors, (271), 78 states have call predecessors, (271), 78 states have return successors, (319), 262 states have call predecessors, (319), 266 states have call successors, (319) [2024-11-27 23:32:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 3027 transitions. [2024-11-27 23:32:00,485 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 3027 transitions. Word has length 127 [2024-11-27 23:32:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:00,486 INFO L471 AbstractCegarLoop]: Abstraction has 1815 states and 3027 transitions. [2024-11-27 23:32:00,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 3027 transitions. [2024-11-27 23:32:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:32:00,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:00,491 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:00,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:32:00,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:00,691 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:00,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 278259245, now seen corresponding path program 1 times [2024-11-27 23:32:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988825543] [2024-11-27 23:32:00,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:32:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988825543] [2024-11-27 23:32:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988825543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450042345] [2024-11-27 23:32:00,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:00,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:00,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:32:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:01,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:32:01,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:32:01,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450042345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:01,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 23:32:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109267992] [2024-11-27 23:32:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:01,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:01,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:01,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:01,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:01,168 INFO L87 Difference]: Start difference. First operand 1815 states and 3027 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:32:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:01,266 INFO L93 Difference]: Finished difference Result 3607 states and 6032 transitions. [2024-11-27 23:32:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:01,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-27 23:32:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:01,281 INFO L225 Difference]: With dead ends: 3607 [2024-11-27 23:32:01,282 INFO L226 Difference]: Without dead ends: 1780 [2024-11-27 23:32:01,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:01,293 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 7 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:01,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2830 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2024-11-27 23:32:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1780. [2024-11-27 23:32:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1433 states have (on average 1.653175157013259) internal successors, (2369), 1479 states have internal predecessors, (2369), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-27 23:32:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2955 transitions. [2024-11-27 23:32:01,390 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2955 transitions. Word has length 127 [2024-11-27 23:32:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:01,390 INFO L471 AbstractCegarLoop]: Abstraction has 1780 states and 2955 transitions. [2024-11-27 23:32:01,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:32:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2955 transitions. [2024-11-27 23:32:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:32:01,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:01,395 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:01,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:01,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:01,596 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:01,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1203105036, now seen corresponding path program 1 times [2024-11-27 23:32:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096943432] [2024-11-27 23:32:01,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:32:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096943432] [2024-11-27 23:32:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096943432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802215937] [2024-11-27 23:32:01,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:01,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:01,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:01,773 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:01,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:32:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:02,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 23:32:02,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:32:02,173 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:02,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802215937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:02,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:02,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-27 23:32:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677328251] [2024-11-27 23:32:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:02,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:32:02,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:02,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:32:02,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:32:02,174 INFO L87 Difference]: Start difference. First operand 1780 states and 2955 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:02,312 INFO L93 Difference]: Finished difference Result 3575 states and 5932 transitions. [2024-11-27 23:32:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:32:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-11-27 23:32:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:02,324 INFO L225 Difference]: With dead ends: 3575 [2024-11-27 23:32:02,324 INFO L226 Difference]: Without dead ends: 1812 [2024-11-27 23:32:02,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:02,333 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 122 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:02,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5597 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2024-11-27 23:32:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1773. [2024-11-27 23:32:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1426 states have (on average 1.650070126227209) internal successors, (2353), 1472 states have internal predecessors, (2353), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-27 23:32:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2939 transitions. [2024-11-27 23:32:02,464 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2939 transitions. Word has length 128 [2024-11-27 23:32:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:02,465 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 2939 transitions. [2024-11-27 23:32:02,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2939 transitions. [2024-11-27 23:32:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 23:32:02,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:02,471 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:02,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:32:02,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b31e57a2-d606-4df2-8212-600be1b44113/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 23:32:02,676 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:02,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash -184486513, now seen corresponding path program 1 times [2024-11-27 23:32:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416052151] [2024-11-27 23:32:02,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:32:02,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:02,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416052151] [2024-11-27 23:32:02,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416052151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:02,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:32:02,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598806835] [2024-11-27 23:32:02,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:02,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:32:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:02,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:32:02,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:32:02,896 INFO L87 Difference]: Start difference. First operand 1773 states and 2939 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:03,063 INFO L93 Difference]: Finished difference Result 3479 states and 5780 transitions. [2024-11-27 23:32:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:32:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2024-11-27 23:32:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:03,075 INFO L225 Difference]: With dead ends: 3479 [2024-11-27 23:32:03,075 INFO L226 Difference]: Without dead ends: 1814 [2024-11-27 23:32:03,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:03,083 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 126 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5541 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:03,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5541 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:32:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2024-11-27 23:32:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1773. [2024-11-27 23:32:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1426 states have (on average 1.650070126227209) internal successors, (2353), 1472 states have internal predecessors, (2353), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-11-27 23:32:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2939 transitions. [2024-11-27 23:32:03,156 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2939 transitions. Word has length 129 [2024-11-27 23:32:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:03,156 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 2939 transitions. [2024-11-27 23:32:03,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:32:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2939 transitions. [2024-11-27 23:32:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 23:32:03,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:03,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:03,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:32:03,161 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:03,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -499938289, now seen corresponding path program 1 times [2024-11-27 23:32:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496126291] [2024-11-27 23:32:03,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:03,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:32:03,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:03,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496126291] [2024-11-27 23:32:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496126291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:03,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:03,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078374317] [2024-11-27 23:32:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:03,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:03,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:03,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:03,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:03,255 INFO L87 Difference]: Start difference. First operand 1773 states and 2939 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:32:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:03,344 INFO L93 Difference]: Finished difference Result 3501 states and 5821 transitions. [2024-11-27 23:32:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-27 23:32:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:03,355 INFO L225 Difference]: With dead ends: 3501 [2024-11-27 23:32:03,355 INFO L226 Difference]: Without dead ends: 1731 [2024-11-27 23:32:03,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:03,362 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 8 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:03,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2829 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2024-11-27 23:32:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2024-11-27 23:32:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1387 states have (on average 1.643835616438356) internal successors, (2280), 1431 states have internal predecessors, (2280), 269 states have call successors, (269), 78 states have call predecessors, (269), 74 states have return successors, (313), 260 states have call predecessors, (313), 264 states have call successors, (313) [2024-11-27 23:32:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2862 transitions. [2024-11-27 23:32:03,427 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2862 transitions. Word has length 129 [2024-11-27 23:32:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:03,428 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2862 transitions. [2024-11-27 23:32:03,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:32:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2862 transitions. [2024-11-27 23:32:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:32:03,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:03,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:03,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:32:03,432 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:03,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1614101192, now seen corresponding path program 1 times [2024-11-27 23:32:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:03,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5773854] [2024-11-27 23:32:03,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5773854] [2024-11-27 23:32:03,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5773854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:03,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:03,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217017169] [2024-11-27 23:32:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:03,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:03,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:03,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:03,550 INFO L87 Difference]: Start difference. First operand 1731 states and 2862 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:04,480 INFO L93 Difference]: Finished difference Result 4991 states and 8466 transitions. [2024-11-27 23:32:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2024-11-27 23:32:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:04,499 INFO L225 Difference]: With dead ends: 4991 [2024-11-27 23:32:04,499 INFO L226 Difference]: Without dead ends: 3330 [2024-11-27 23:32:04,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:04,508 INFO L435 NwaCegarLoop]: 1840 mSDtfsCounter, 1819 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:04,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3286 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:32:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2024-11-27 23:32:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3324. [2024-11-27 23:32:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 2664 states have (on average 1.6355105105105106) internal successors, (4357), 2750 states have internal predecessors, (4357), 516 states have call successors, (516), 150 states have call predecessors, (516), 143 states have return successors, (640), 501 states have call predecessors, (640), 508 states have call successors, (640) [2024-11-27 23:32:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5513 transitions. [2024-11-27 23:32:04,646 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5513 transitions. Word has length 130 [2024-11-27 23:32:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:04,646 INFO L471 AbstractCegarLoop]: Abstraction has 3324 states and 5513 transitions. [2024-11-27 23:32:04,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5513 transitions. [2024-11-27 23:32:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 23:32:04,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:04,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:04,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:32:04,650 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:04,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1739543859, now seen corresponding path program 1 times [2024-11-27 23:32:04,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212048607] [2024-11-27 23:32:04,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212048607] [2024-11-27 23:32:04,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212048607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:04,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:04,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279695446] [2024-11-27 23:32:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:04,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:04,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:04,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:04,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:04,773 INFO L87 Difference]: Start difference. First operand 3324 states and 5513 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:05,789 INFO L93 Difference]: Finished difference Result 9785 states and 16648 transitions. [2024-11-27 23:32:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:05,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2024-11-27 23:32:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:05,832 INFO L225 Difference]: With dead ends: 9785 [2024-11-27 23:32:05,832 INFO L226 Difference]: Without dead ends: 6531 [2024-11-27 23:32:05,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:05,853 INFO L435 NwaCegarLoop]: 1849 mSDtfsCounter, 1828 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:05,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 3302 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:32:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2024-11-27 23:32:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 6523. [2024-11-27 23:32:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6523 states, 5228 states have (on average 1.627008416220352) internal successors, (8506), 5398 states have internal predecessors, (8506), 1013 states have call successors, (1013), 294 states have call predecessors, (1013), 281 states have return successors, (1360), 986 states have call predecessors, (1360), 999 states have call successors, (1360) [2024-11-27 23:32:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6523 states to 6523 states and 10879 transitions. [2024-11-27 23:32:06,211 INFO L78 Accepts]: Start accepts. Automaton has 6523 states and 10879 transitions. Word has length 131 [2024-11-27 23:32:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:06,212 INFO L471 AbstractCegarLoop]: Abstraction has 6523 states and 10879 transitions. [2024-11-27 23:32:06,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6523 states and 10879 transitions. [2024-11-27 23:32:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 23:32:06,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:06,217 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:06,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:32:06,217 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:06,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:06,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1420624691, now seen corresponding path program 1 times [2024-11-27 23:32:06,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:06,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981053213] [2024-11-27 23:32:06,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:06,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981053213] [2024-11-27 23:32:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981053213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717491609] [2024-11-27 23:32:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:06,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:06,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:06,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:06,353 INFO L87 Difference]: Start difference. First operand 6523 states and 10879 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:07,694 INFO L93 Difference]: Finished difference Result 19397 states and 33420 transitions. [2024-11-27 23:32:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:07,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2024-11-27 23:32:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:07,793 INFO L225 Difference]: With dead ends: 19397 [2024-11-27 23:32:07,793 INFO L226 Difference]: Without dead ends: 12944 [2024-11-27 23:32:07,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:07,840 INFO L435 NwaCegarLoop]: 1858 mSDtfsCounter, 1837 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:07,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 3318 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:32:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12944 states. [2024-11-27 23:32:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12944 to 12936. [2024-11-27 23:32:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 10368 states have (on average 1.6177662037037037) internal successors, (16773), 10706 states have internal predecessors, (16773), 2010 states have call successors, (2010), 582 states have call predecessors, (2010), 557 states have return successors, (2992), 1959 states have call predecessors, (2992), 1984 states have call successors, (2992) [2024-11-27 23:32:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 21775 transitions. [2024-11-27 23:32:08,681 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 21775 transitions. Word has length 132 [2024-11-27 23:32:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:08,682 INFO L471 AbstractCegarLoop]: Abstraction has 12936 states and 21775 transitions. [2024-11-27 23:32:08,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 21775 transitions. [2024-11-27 23:32:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 23:32:08,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:08,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:08,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:32:08,689 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:08,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1078635570, now seen corresponding path program 1 times [2024-11-27 23:32:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960091299] [2024-11-27 23:32:08,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:08,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960091299] [2024-11-27 23:32:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960091299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509434076] [2024-11-27 23:32:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:08,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:08,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:08,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:08,852 INFO L87 Difference]: Start difference. First operand 12936 states and 21775 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:10,744 INFO L93 Difference]: Finished difference Result 38651 states and 67878 transitions. [2024-11-27 23:32:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2024-11-27 23:32:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:10,889 INFO L225 Difference]: With dead ends: 38651 [2024-11-27 23:32:10,889 INFO L226 Difference]: Without dead ends: 25785 [2024-11-27 23:32:10,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:10,985 INFO L435 NwaCegarLoop]: 1867 mSDtfsCounter, 1846 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3334 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:10,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3334 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:32:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25785 states. [2024-11-27 23:32:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25785 to 25781. [2024-11-27 23:32:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25781 states, 20664 states have (on average 1.60801393728223) internal successors, (33228), 21338 states have internal predecessors, (33228), 4007 states have call successors, (4007), 1158 states have call predecessors, (4007), 1109 states have return successors, (6844), 3908 states have call predecessors, (6844), 3957 states have call successors, (6844) [2024-11-27 23:32:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25781 states to 25781 states and 44079 transitions. [2024-11-27 23:32:12,399 INFO L78 Accepts]: Start accepts. Automaton has 25781 states and 44079 transitions. Word has length 133 [2024-11-27 23:32:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:12,400 INFO L471 AbstractCegarLoop]: Abstraction has 25781 states and 44079 transitions. [2024-11-27 23:32:12,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 25781 states and 44079 transitions. [2024-11-27 23:32:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 23:32:12,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:12,404 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:12,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:32:12,404 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:12,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1845974318, now seen corresponding path program 1 times [2024-11-27 23:32:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477962709] [2024-11-27 23:32:12,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477962709] [2024-11-27 23:32:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477962709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:12,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:12,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:12,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870565575] [2024-11-27 23:32:12,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:12,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:12,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:12,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:12,710 INFO L87 Difference]: Start difference. First operand 25781 states and 44079 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:16,295 INFO L93 Difference]: Finished difference Result 77201 states and 140004 transitions. [2024-11-27 23:32:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:16,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-27 23:32:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:16,643 INFO L225 Difference]: With dead ends: 77201 [2024-11-27 23:32:16,643 INFO L226 Difference]: Without dead ends: 51490 [2024-11-27 23:32:16,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:16,982 INFO L435 NwaCegarLoop]: 1876 mSDtfsCounter, 1855 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:16,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 3350 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:32:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51490 states. [2024-11-27 23:32:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51490 to 51486. [2024-11-27 23:32:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51486 states, 41268 states have (on average 1.5981147620432297) internal successors, (65951), 42614 states have internal predecessors, (65951), 8004 states have call successors, (8004), 2310 states have call predecessors, (8004), 2213 states have return successors, (16396), 7809 states have call predecessors, (16396), 7906 states have call successors, (16396) [2024-11-27 23:32:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51486 states to 51486 states and 90351 transitions. [2024-11-27 23:32:21,060 INFO L78 Accepts]: Start accepts. Automaton has 51486 states and 90351 transitions. Word has length 134 [2024-11-27 23:32:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:21,061 INFO L471 AbstractCegarLoop]: Abstraction has 51486 states and 90351 transitions. [2024-11-27 23:32:21,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 51486 states and 90351 transitions. [2024-11-27 23:32:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 23:32:21,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:21,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:21,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 23:32:21,067 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:21,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1364894060, now seen corresponding path program 1 times [2024-11-27 23:32:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544152016] [2024-11-27 23:32:21,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:21,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:21,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544152016] [2024-11-27 23:32:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544152016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:21,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:21,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:32:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365256880] [2024-11-27 23:32:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:21,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:32:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:21,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:32:21,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:32:21,488 INFO L87 Difference]: Start difference. First operand 51486 states and 90351 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:26,936 INFO L93 Difference]: Finished difference Result 139271 states and 244481 transitions. [2024-11-27 23:32:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:32:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-27 23:32:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:27,621 INFO L225 Difference]: With dead ends: 139271 [2024-11-27 23:32:27,622 INFO L226 Difference]: Without dead ends: 87886 [2024-11-27 23:32:28,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:32:28,469 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 1091 mSDsluCounter, 5000 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:28,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 6052 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:32:28,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87886 states. [2024-11-27 23:32:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87886 to 86698. [2024-11-27 23:32:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86698 states, 69499 states have (on average 1.58682858746169) internal successors, (110283), 71549 states have internal predecessors, (110283), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 3912 states have return successors, (26737), 13378 states have call predecessors, (26737), 13155 states have call successors, (26737) [2024-11-27 23:32:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86698 states to 86698 states and 150306 transitions. [2024-11-27 23:32:33,743 INFO L78 Accepts]: Start accepts. Automaton has 86698 states and 150306 transitions. Word has length 134 [2024-11-27 23:32:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:33,744 INFO L471 AbstractCegarLoop]: Abstraction has 86698 states and 150306 transitions. [2024-11-27 23:32:33,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:32:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 86698 states and 150306 transitions. [2024-11-27 23:32:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:32:33,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:33,747 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:33,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:32:33,748 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:33,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash 839222375, now seen corresponding path program 1 times [2024-11-27 23:32:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:33,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320299994] [2024-11-27 23:32:33,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:32:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320299994] [2024-11-27 23:32:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320299994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:33,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:33,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026444333] [2024-11-27 23:32:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:33,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:33,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:33,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:33,875 INFO L87 Difference]: Start difference. First operand 86698 states and 150306 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:32:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:39,306 INFO L93 Difference]: Finished difference Result 159609 states and 275177 transitions. [2024-11-27 23:32:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-11-27 23:32:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:39,877 INFO L225 Difference]: With dead ends: 159609 [2024-11-27 23:32:39,877 INFO L226 Difference]: Without dead ends: 86701 [2024-11-27 23:32:40,878 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 [2024-11-27 23:32:40,879 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 3 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:40,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2859 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86701 states.