./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/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_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/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_b22b4204-a4e5-47f4-ba77-701af0fe1d88/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 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:21:41,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:21:41,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:21:41,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:21:41,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:21:41,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:21:41,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:21:41,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:21:41,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:21:41,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:21:41,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:21:41,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:21:41,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:21:41,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:21:41,739 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:21:41,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:21:41,740 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:21:41,741 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:41,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:41,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:41,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:21:41,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:21:41,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:21:41,743 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_b22b4204-a4e5-47f4-ba77-701af0fe1d88/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 -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2024-11-27 23:21:42,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:21:42,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:21:42,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:21:42,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:21:42,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:21:42,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2024-11-27 23:21:45,108 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/data/c11fd53fd/dbc9665f16b64586b75288815a067f83/FLAG1f8e1eee9 [2024-11-27 23:21:45,592 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:21:45,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2024-11-27 23:21:45,629 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/data/c11fd53fd/dbc9665f16b64586b75288815a067f83/FLAG1f8e1eee9 [2024-11-27 23:21:45,643 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/data/c11fd53fd/dbc9665f16b64586b75288815a067f83 [2024-11-27 23:21:45,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:21:45,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:21:45,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:45,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:21:45,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:21:45,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:45" (1/1) ... [2024-11-27 23:21:45,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7affd6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:45, skipping insertion in model container [2024-11-27 23:21:45,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:45" (1/1) ... [2024-11-27 23:21:45,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:21:45,906 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_b22b4204-a4e5-47f4-ba77-701af0fe1d88/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-27 23:21:46,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:46,423 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:21:46,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-27 23:21:46,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [57] [2024-11-27 23:21:46,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [95] [2024-11-27 23:21:46,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2024-11-27 23:21:46,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [653] [2024-11-27 23:21:46,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [752] [2024-11-27 23:21:46,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [770] [2024-11-27 23:21:46,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1437] [2024-11-27 23:21:46,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1557] [2024-11-27 23:21:46,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3170] [2024-11-27 23:21:46,444 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_b22b4204-a4e5-47f4-ba77-701af0fe1d88/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-27 23:21:46,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:46,629 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:21:46,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46 WrapperNode [2024-11-27 23:21:46,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:46,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:46,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:21:46,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:21:46,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,707 INFO L138 Inliner]: procedures = 95, calls = 355, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 987 [2024-11-27 23:21:46,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:46,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:21:46,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:21:46,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:21:46,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,771 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-27 23:21:46,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:21:46,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:21:46,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:21:46,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:21:46,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (1/1) ... [2024-11-27 23:21:46,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:46,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:21:46,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:21:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:21:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 23:21:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 23:21:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-27 23:21:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-27 23:21:46,974 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 23:21:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 23:21:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 23:21:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 23:21:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-27 23:21:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 23:21:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 23:21:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 23:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 23:21:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 23:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 23:21:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 23:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 23:21:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 23:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 23:21:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-27 23:21:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-27 23:21:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 23:21:46,982 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:21:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 23:21:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:21:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 23:21:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 23:21:47,256 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:21:47,259 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:21:49,034 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2024-11-27 23:21:49,051 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:21:49,088 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:21:49,088 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:21:49,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:49 BoogieIcfgContainer [2024-11-27 23:21:49,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:21:49,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:21:49,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:21:49,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:21:49,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:21:45" (1/3) ... [2024-11-27 23:21:49,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69607bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:49, skipping insertion in model container [2024-11-27 23:21:49,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:46" (2/3) ... [2024-11-27 23:21:49,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69607bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:49, skipping insertion in model container [2024-11-27 23:21:49,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:49" (3/3) ... [2024-11-27 23:21:49,105 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2024-11-27 23:21:49,125 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:21:49,128 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product31.cil.c that has 29 procedures, 620 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:21:49,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:21:49,254 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;@2b0a544e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:21:49,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:21:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 477 states have (on average 1.6645702306079664) internal successors, (794), 495 states have internal predecessors, (794), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-27 23:21:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:21:49,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:49,304 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:49,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:49,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash -973088103, now seen corresponding path program 1 times [2024-11-27 23:21:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:49,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533910973] [2024-11-27 23:21:49,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533910973] [2024-11-27 23:21:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533910973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:50,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:50,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:21:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769149647] [2024-11-27 23:21:50,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:50,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:50,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:50,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:50,458 INFO L87 Difference]: Start difference. First operand has 620 states, 477 states have (on average 1.6645702306079664) internal successors, (794), 495 states have internal predecessors, (794), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:50,850 INFO L93 Difference]: Finished difference Result 1237 states and 2052 transitions. [2024-11-27 23:21:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2024-11-27 23:21:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:50,881 INFO L225 Difference]: With dead ends: 1237 [2024-11-27 23:21:50,881 INFO L226 Difference]: Without dead ends: 625 [2024-11-27 23:21:50,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:50,901 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 91 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:50,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5927 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-27 23:21:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 623. [2024-11-27 23:21:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 480 states have (on average 1.65625) internal successors, (795), 498 states have internal predecessors, (795), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-11-27 23:21:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1022 transitions. [2024-11-27 23:21:51,049 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1022 transitions. Word has length 115 [2024-11-27 23:21:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:51,050 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1022 transitions. [2024-11-27 23:21:51,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1022 transitions. [2024-11-27 23:21:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:21:51,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:51,069 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:51,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:21:51,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:51,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1177356974, now seen corresponding path program 1 times [2024-11-27 23:21:51,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:51,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643930823] [2024-11-27 23:21:51,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643930823] [2024-11-27 23:21:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643930823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:21:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914419370] [2024-11-27 23:21:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:51,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:51,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:51,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:51,619 INFO L87 Difference]: Start difference. First operand 623 states and 1022 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:51,856 INFO L93 Difference]: Finished difference Result 1241 states and 2047 transitions. [2024-11-27 23:21:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:51,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2024-11-27 23:21:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:51,866 INFO L225 Difference]: With dead ends: 1241 [2024-11-27 23:21:51,866 INFO L226 Difference]: Without dead ends: 634 [2024-11-27 23:21:51,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:51,872 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 90 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5922 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:51,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5922 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:51,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-27 23:21:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 623. [2024-11-27 23:21:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 480 states have (on average 1.65625) internal successors, (795), 498 states have internal predecessors, (795), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-11-27 23:21:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1022 transitions. [2024-11-27 23:21:51,936 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1022 transitions. Word has length 116 [2024-11-27 23:21:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:51,937 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1022 transitions. [2024-11-27 23:21:51,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1022 transitions. [2024-11-27 23:21:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:21:51,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:51,948 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:51,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:21:51,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:51,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1569441686, now seen corresponding path program 1 times [2024-11-27 23:21:51,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:51,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794141641] [2024-11-27 23:21:51,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794141641] [2024-11-27 23:21:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794141641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144668819] [2024-11-27 23:21:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:52,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:52,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:52,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:52,161 INFO L87 Difference]: Start difference. First operand 623 states and 1022 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:52,290 INFO L93 Difference]: Finished difference Result 1228 states and 2025 transitions. [2024-11-27 23:21:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-27 23:21:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:52,297 INFO L225 Difference]: With dead ends: 1228 [2024-11-27 23:21:52,298 INFO L226 Difference]: Without dead ends: 593 [2024-11-27 23:21:52,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:52,304 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 14 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:52,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2971 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-27 23:21:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-27 23:21:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 453 states have (on average 1.640176600441501) internal successors, (743), 469 states have internal predecessors, (743), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 966 transitions. [2024-11-27 23:21:52,356 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 966 transitions. Word has length 116 [2024-11-27 23:21:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:52,357 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 966 transitions. [2024-11-27 23:21:52,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 966 transitions. [2024-11-27 23:21:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 23:21:52,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:52,378 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:52,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:21:52,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:52,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 91940317, now seen corresponding path program 1 times [2024-11-27 23:21:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113006312] [2024-11-27 23:21:52,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:52,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113006312] [2024-11-27 23:21:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113006312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:21:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086181157] [2024-11-27 23:21:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:52,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:52,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:52,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:52,749 INFO L87 Difference]: Start difference. First operand 593 states and 966 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:52,870 INFO L93 Difference]: Finished difference Result 1179 states and 1931 transitions. [2024-11-27 23:21:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2024-11-27 23:21:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:52,878 INFO L225 Difference]: With dead ends: 1179 [2024-11-27 23:21:52,879 INFO L226 Difference]: Without dead ends: 587 [2024-11-27 23:21:52,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:52,886 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 63 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:52,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5678 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-27 23:21:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-27 23:21:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 447 states have (on average 1.633109619686801) internal successors, (730), 463 states have internal predecessors, (730), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 953 transitions. [2024-11-27 23:21:52,945 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 953 transitions. Word has length 117 [2024-11-27 23:21:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:52,945 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 953 transitions. [2024-11-27 23:21:52,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 953 transitions. [2024-11-27 23:21:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 23:21:52,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:52,949 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:52,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:21:52,949 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:52,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash -202851626, now seen corresponding path program 1 times [2024-11-27 23:21:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:52,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070556572] [2024-11-27 23:21:52,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:52,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:53,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070556572] [2024-11-27 23:21:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070556572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:21:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450661677] [2024-11-27 23:21:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:53,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:53,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:53,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:53,293 INFO L87 Difference]: Start difference. First operand 587 states and 953 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:53,447 INFO L93 Difference]: Finished difference Result 1167 states and 1905 transitions. [2024-11-27 23:21:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-11-27 23:21:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:53,457 INFO L225 Difference]: With dead ends: 1167 [2024-11-27 23:21:53,457 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:53,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:53,462 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 49 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:53,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5618 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6258503401360545) internal successors, (717), 457 states have internal predecessors, (717), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 940 transitions. [2024-11-27 23:21:53,506 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 940 transitions. Word has length 118 [2024-11-27 23:21:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:53,506 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 940 transitions. [2024-11-27 23:21:53,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 940 transitions. [2024-11-27 23:21:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 23:21:53,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:53,511 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:53,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:21:53,511 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:53,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1039516695, now seen corresponding path program 1 times [2024-11-27 23:21:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995638663] [2024-11-27 23:21:53,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:53,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995638663] [2024-11-27 23:21:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995638663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:53,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:53,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:21:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178711553] [2024-11-27 23:21:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:53,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:53,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:53,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:53,807 INFO L87 Difference]: Start difference. First operand 581 states and 940 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:53,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:53,911 INFO L93 Difference]: Finished difference Result 1155 states and 1879 transitions. [2024-11-27 23:21:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:53,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-11-27 23:21:53,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:53,916 INFO L225 Difference]: With dead ends: 1155 [2024-11-27 23:21:53,917 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:53,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:53,921 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 24 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:53,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5570 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6235827664399094) internal successors, (716), 457 states have internal predecessors, (716), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 939 transitions. [2024-11-27 23:21:53,953 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 939 transitions. Word has length 118 [2024-11-27 23:21:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:53,953 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 939 transitions. [2024-11-27 23:21:53,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 939 transitions. [2024-11-27 23:21:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:21:53,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:53,957 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:53,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:21:53,957 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:53,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1739769567, now seen corresponding path program 1 times [2024-11-27 23:21:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093044415] [2024-11-27 23:21:53,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093044415] [2024-11-27 23:21:54,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093044415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:54,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:54,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:54,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102599113] [2024-11-27 23:21:54,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:54,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:54,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:54,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:54,167 INFO L87 Difference]: Start difference. First operand 581 states and 939 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:54,253 INFO L93 Difference]: Finished difference Result 1146 states and 1864 transitions. [2024-11-27 23:21:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:54,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 119 [2024-11-27 23:21:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:54,259 INFO L225 Difference]: With dead ends: 1146 [2024-11-27 23:21:54,260 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:54,265 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 23:21:54,266 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 15 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:54,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2757 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6213151927437641) internal successors, (715), 457 states have internal predecessors, (715), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 938 transitions. [2024-11-27 23:21:54,300 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 938 transitions. Word has length 119 [2024-11-27 23:21:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:54,300 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 938 transitions. [2024-11-27 23:21:54,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 938 transitions. [2024-11-27 23:21:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 23:21:54,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:54,305 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:54,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:21:54,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:54,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -195818218, now seen corresponding path program 1 times [2024-11-27 23:21:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296922881] [2024-11-27 23:21:54,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296922881] [2024-11-27 23:21:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296922881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:54,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599382333] [2024-11-27 23:21:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:54,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:54,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:54,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:54,503 INFO L87 Difference]: Start difference. First operand 581 states and 938 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:54,606 INFO L93 Difference]: Finished difference Result 1146 states and 1862 transitions. [2024-11-27 23:21:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-27 23:21:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:54,611 INFO L225 Difference]: With dead ends: 1146 [2024-11-27 23:21:54,611 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:54,614 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 23:21:54,615 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 14 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:54,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2759 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.619047619047619) internal successors, (714), 457 states have internal predecessors, (714), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 937 transitions. [2024-11-27 23:21:54,644 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 937 transitions. Word has length 120 [2024-11-27 23:21:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:54,644 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 937 transitions. [2024-11-27 23:21:54,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 937 transitions. [2024-11-27 23:21:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 23:21:54,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:54,648 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:54,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:21:54,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:54,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:54,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1103826438, now seen corresponding path program 1 times [2024-11-27 23:21:54,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:54,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200861663] [2024-11-27 23:21:54,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200861663] [2024-11-27 23:21:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200861663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114432522] [2024-11-27 23:21:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:54,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:54,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:54,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:54,827 INFO L87 Difference]: Start difference. First operand 581 states and 937 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:54,895 INFO L93 Difference]: Finished difference Result 1146 states and 1860 transitions. [2024-11-27 23:21:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2024-11-27 23:21:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:54,900 INFO L225 Difference]: With dead ends: 1146 [2024-11-27 23:21:54,900 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:54,904 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 23:21:54,904 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 13 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:54,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.616780045351474) internal successors, (713), 457 states have internal predecessors, (713), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 936 transitions. [2024-11-27 23:21:54,934 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 936 transitions. Word has length 121 [2024-11-27 23:21:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:54,935 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 936 transitions. [2024-11-27 23:21:54,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 936 transitions. [2024-11-27 23:21:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 23:21:54,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:54,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:54,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:21:54,938 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:54,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash -875069093, now seen corresponding path program 1 times [2024-11-27 23:21:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:54,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755330722] [2024-11-27 23:21:54,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755330722] [2024-11-27 23:21:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755330722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965522280] [2024-11-27 23:21:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:55,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:55,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:55,162 INFO L87 Difference]: Start difference. First operand 581 states and 936 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:55,252 INFO L93 Difference]: Finished difference Result 1146 states and 1858 transitions. [2024-11-27 23:21:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2024-11-27 23:21:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:55,259 INFO L225 Difference]: With dead ends: 1146 [2024-11-27 23:21:55,259 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 23:21:55,263 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 23:21:55,264 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 12 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:55,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2763 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 23:21:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 23:21:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 441 states have (on average 1.6145124716553287) internal successors, (712), 457 states have internal predecessors, (712), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 23:21:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 935 transitions. [2024-11-27 23:21:55,300 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 935 transitions. Word has length 122 [2024-11-27 23:21:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:55,301 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 935 transitions. [2024-11-27 23:21:55,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 23:21:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 935 transitions. [2024-11-27 23:21:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 23:21:55,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:55,306 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:55,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:21:55,306 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:55,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1409495317, now seen corresponding path program 1 times [2024-11-27 23:21:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346954809] [2024-11-27 23:21:55,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:21:55,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346954809] [2024-11-27 23:21:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346954809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290735739] [2024-11-27 23:21:55,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:55,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:55,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:55,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:55,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:21:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:56,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:21:56,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:21:56,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:56,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290735739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:56,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:21:56,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-27 23:21:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723284110] [2024-11-27 23:21:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:56,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:56,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:56,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:21:56,432 INFO L87 Difference]: Start difference. First operand 581 states and 935 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:56,538 INFO L93 Difference]: Finished difference Result 1654 states and 2693 transitions. [2024-11-27 23:21:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:56,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-11-27 23:21:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:56,548 INFO L225 Difference]: With dead ends: 1654 [2024-11-27 23:21:56,548 INFO L226 Difference]: Without dead ends: 1091 [2024-11-27 23:21:56,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:21:56,553 INFO L435 NwaCegarLoop]: 1607 mSDtfsCounter, 858 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:56,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2438 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-11-27 23:21:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1076. [2024-11-27 23:21:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 824 states have (on average 1.6262135922330097) internal successors, (1340), 855 states have internal predecessors, (1340), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2024-11-27 23:21:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1744 transitions. [2024-11-27 23:21:56,617 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1744 transitions. Word has length 123 [2024-11-27 23:21:56,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:56,618 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1744 transitions. [2024-11-27 23:21:56,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1744 transitions. [2024-11-27 23:21:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:21:56,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:56,624 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:56,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:56,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:56,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:56,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2047834707, now seen corresponding path program 1 times [2024-11-27 23:21:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886640948] [2024-11-27 23:21:56,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:21:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886640948] [2024-11-27 23:21:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886640948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362358586] [2024-11-27 23:21:57,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:57,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:57,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:57,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:21:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:57,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:21:57,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:21:57,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362358586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:57,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:21:57,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-27 23:21:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50171921] [2024-11-27 23:21:57,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:57,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:57,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:57,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:21:57,912 INFO L87 Difference]: Start difference. First operand 1076 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:58,062 INFO L93 Difference]: Finished difference Result 2644 states and 4313 transitions. [2024-11-27 23:21:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-11-27 23:21:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:58,078 INFO L225 Difference]: With dead ends: 2644 [2024-11-27 23:21:58,079 INFO L226 Difference]: Without dead ends: 1586 [2024-11-27 23:21:58,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:21:58,087 INFO L435 NwaCegarLoop]: 1663 mSDtfsCounter, 860 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:58,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2492 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-27 23:21:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1538. [2024-11-27 23:21:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1180 states have (on average 1.6372881355932203) internal successors, (1932), 1226 states have internal predecessors, (1932), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2024-11-27 23:21:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2511 transitions. [2024-11-27 23:21:58,192 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2511 transitions. Word has length 124 [2024-11-27 23:21:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:58,192 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2511 transitions. [2024-11-27 23:21:58,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:21:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2511 transitions. [2024-11-27 23:21:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:21:58,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:58,200 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:58,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:58,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:58,401 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:58,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 849224441, now seen corresponding path program 1 times [2024-11-27 23:21:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158386993] [2024-11-27 23:21:58,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:21:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158386993] [2024-11-27 23:21:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158386993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:58,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:58,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:21:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811481492] [2024-11-27 23:21:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:58,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:21:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:58,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:21:58,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:58,683 INFO L87 Difference]: Start difference. First operand 1538 states and 2511 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:21:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:59,697 INFO L93 Difference]: Finished difference Result 4538 states and 7558 transitions. [2024-11-27 23:21:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:21:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2024-11-27 23:21:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:59,733 INFO L225 Difference]: With dead ends: 4538 [2024-11-27 23:21:59,733 INFO L226 Difference]: Without dead ends: 3018 [2024-11-27 23:21:59,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:21:59,750 INFO L435 NwaCegarLoop]: 1037 mSDtfsCounter, 931 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:59,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 4770 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:21:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2024-11-27 23:21:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2971. [2024-11-27 23:21:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2281 states have (on average 1.6370013152126262) internal successors, (3734), 2369 states have internal predecessors, (3734), 551 states have call successors, (551), 136 states have call predecessors, (551), 138 states have return successors, (655), 543 states have call predecessors, (655), 547 states have call successors, (655) [2024-11-27 23:22:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4940 transitions. [2024-11-27 23:22:00,041 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4940 transitions. Word has length 126 [2024-11-27 23:22:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:00,041 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4940 transitions. [2024-11-27 23:22:00,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:22:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4940 transitions. [2024-11-27 23:22:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:22:00,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:00,050 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:00,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:22:00,051 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:00,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1988718745, now seen corresponding path program 1 times [2024-11-27 23:22:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:00,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662398332] [2024-11-27 23:22:00,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:00,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:22:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662398332] [2024-11-27 23:22:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662398332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085229114] [2024-11-27 23:22:00,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:00,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:00,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:22:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:00,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:22:00,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:22:01,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085229114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:01,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:22:01,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-27 23:22:01,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518075889] [2024-11-27 23:22:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:01,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:01,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:01,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:22:01,137 INFO L87 Difference]: Start difference. First operand 2971 states and 4940 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-27 23:22:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:02,493 INFO L93 Difference]: Finished difference Result 8060 states and 13612 transitions. [2024-11-27 23:22:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:02,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-11-27 23:22:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:02,543 INFO L225 Difference]: With dead ends: 8060 [2024-11-27 23:22:02,543 INFO L226 Difference]: Without dead ends: 5107 [2024-11-27 23:22:02,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:22:02,580 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 793 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:02,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 4232 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:22:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2024-11-27 23:22:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5064. [2024-11-27 23:22:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 3882 states have (on average 1.5909325090159712) internal successors, (6176), 4028 states have internal predecessors, (6176), 930 states have call successors, (930), 246 states have call predecessors, (930), 251 states have return successors, (1213), 919 states have call predecessors, (1213), 924 states have call successors, (1213) [2024-11-27 23:22:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 8319 transitions. [2024-11-27 23:22:02,976 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 8319 transitions. Word has length 127 [2024-11-27 23:22:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:02,976 INFO L471 AbstractCegarLoop]: Abstraction has 5064 states and 8319 transitions. [2024-11-27 23:22:02,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-27 23:22:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 8319 transitions. [2024-11-27 23:22:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:22:02,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:02,981 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:02,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:03,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:22:03,184 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:03,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1350928651, now seen corresponding path program 1 times [2024-11-27 23:22:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477167021] [2024-11-27 23:22:03,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 23:22:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477167021] [2024-11-27 23:22:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477167021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:03,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317902218] [2024-11-27 23:22:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:03,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:03,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:03,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:03,348 INFO L87 Difference]: Start difference. First operand 5064 states and 8319 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:22:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:03,877 INFO L93 Difference]: Finished difference Result 10134 states and 16813 transitions. [2024-11-27 23:22:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:03,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-27 23:22:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:03,928 INFO L225 Difference]: With dead ends: 10134 [2024-11-27 23:22:03,928 INFO L226 Difference]: Without dead ends: 5088 [2024-11-27 23:22:03,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:03,968 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 12 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:03,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2727 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2024-11-27 23:22:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 5072. [2024-11-27 23:22:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 3888 states have (on average 1.5895061728395061) internal successors, (6180), 4034 states have internal predecessors, (6180), 930 states have call successors, (930), 250 states have call predecessors, (930), 253 states have return successors, (1202), 917 states have call predecessors, (1202), 924 states have call successors, (1202) [2024-11-27 23:22:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 8312 transitions. [2024-11-27 23:22:04,368 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 8312 transitions. Word has length 127 [2024-11-27 23:22:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:04,368 INFO L471 AbstractCegarLoop]: Abstraction has 5072 states and 8312 transitions. [2024-11-27 23:22:04,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:22:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 8312 transitions. [2024-11-27 23:22:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 23:22:04,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:04,375 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:04,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:22:04,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:04,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786511, now seen corresponding path program 1 times [2024-11-27 23:22:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818100800] [2024-11-27 23:22:04,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:22:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818100800] [2024-11-27 23:22:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818100800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:04,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:04,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126312745] [2024-11-27 23:22:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:04,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:04,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:04,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:04,621 INFO L87 Difference]: Start difference. First operand 5072 states and 8312 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-27 23:22:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:05,861 INFO L93 Difference]: Finished difference Result 15149 states and 25617 transitions. [2024-11-27 23:22:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-11-27 23:22:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:05,975 INFO L225 Difference]: With dead ends: 15149 [2024-11-27 23:22:05,975 INFO L226 Difference]: Without dead ends: 10095 [2024-11-27 23:22:06,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:06,010 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 925 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:06,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4647 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:22:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10095 states. [2024-11-27 23:22:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 10026. [2024-11-27 23:22:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7688 states have (on average 1.5854578563995838) internal successors, (12189), 7974 states have internal predecessors, (12189), 1832 states have call successors, (1832), 494 states have call predecessors, (1832), 505 states have return successors, (2816), 1817 states have call predecessors, (2816), 1822 states have call successors, (2816) [2024-11-27 23:22:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16837 transitions. [2024-11-27 23:22:06,800 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16837 transitions. Word has length 135 [2024-11-27 23:22:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:06,800 INFO L471 AbstractCegarLoop]: Abstraction has 10026 states and 16837 transitions. [2024-11-27 23:22:06,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-27 23:22:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16837 transitions. [2024-11-27 23:22:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:22:06,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:06,816 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:06,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:22:06,816 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:06,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash 982550885, now seen corresponding path program 1 times [2024-11-27 23:22:06,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:06,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201700144] [2024-11-27 23:22:06,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:06,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:22:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201700144] [2024-11-27 23:22:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201700144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:06,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021050669] [2024-11-27 23:22:06,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:06,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:06,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:06,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:06,991 INFO L87 Difference]: Start difference. First operand 10026 states and 16837 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:22:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:07,818 INFO L93 Difference]: Finished difference Result 20106 states and 34247 transitions. [2024-11-27 23:22:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-11-27 23:22:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:07,993 INFO L225 Difference]: With dead ends: 20106 [2024-11-27 23:22:07,993 INFO L226 Difference]: Without dead ends: 10098 [2024-11-27 23:22:08,062 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 23:22:08,062 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 12 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:08,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2718 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10098 states. [2024-11-27 23:22:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10098 to 10066. [2024-11-27 23:22:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7724 states have (on average 1.5832470222682549) internal successors, (12229), 8002 states have internal predecessors, (12229), 1832 states have call successors, (1832), 510 states have call predecessors, (1832), 509 states have return successors, (2800), 1813 states have call predecessors, (2800), 1822 states have call successors, (2800) [2024-11-27 23:22:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 16861 transitions. [2024-11-27 23:22:08,787 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 16861 transitions. Word has length 136 [2024-11-27 23:22:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:08,788 INFO L471 AbstractCegarLoop]: Abstraction has 10066 states and 16861 transitions. [2024-11-27 23:22:08,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:22:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 16861 transitions. [2024-11-27 23:22:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 23:22:08,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:08,795 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:08,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:22:08,795 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:08,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 194595507, now seen corresponding path program 1 times [2024-11-27 23:22:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911821276] [2024-11-27 23:22:08,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:22:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911821276] [2024-11-27 23:22:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911821276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:09,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987451215] [2024-11-27 23:22:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:09,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:09,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:09,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:09,062 INFO L87 Difference]: Start difference. First operand 10066 states and 16861 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:22:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:10,737 INFO L93 Difference]: Finished difference Result 30209 states and 52906 transitions. [2024-11-27 23:22:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-27 23:22:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:10,936 INFO L225 Difference]: With dead ends: 30209 [2024-11-27 23:22:10,936 INFO L226 Difference]: Without dead ends: 20161 [2024-11-27 23:22:11,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:11,037 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 920 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:11,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 4669 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:22:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20161 states. [2024-11-27 23:22:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20161 to 20060. [2024-11-27 23:22:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20060 states, 15396 states have (on average 1.5798259288126786) internal successors, (24323), 15946 states have internal predecessors, (24323), 3642 states have call successors, (3642), 1014 states have call predecessors, (3642), 1021 states have return successors, (6872), 3619 states have call predecessors, (6872), 3624 states have call successors, (6872) [2024-11-27 23:22:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20060 states to 20060 states and 34837 transitions. [2024-11-27 23:22:12,957 INFO L78 Accepts]: Start accepts. Automaton has 20060 states and 34837 transitions. Word has length 145 [2024-11-27 23:22:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:12,958 INFO L471 AbstractCegarLoop]: Abstraction has 20060 states and 34837 transitions. [2024-11-27 23:22:12,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:22:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 20060 states and 34837 transitions. [2024-11-27 23:22:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 23:22:12,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:12,966 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:12,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:22:12,966 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:12,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash -784701815, now seen corresponding path program 1 times [2024-11-27 23:22:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:12,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737541158] [2024-11-27 23:22:12,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 23:22:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:13,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737541158] [2024-11-27 23:22:13,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737541158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:13,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:13,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774128225] [2024-11-27 23:22:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:13,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:13,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:13,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:13,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:13,099 INFO L87 Difference]: Start difference. First operand 20060 states and 34837 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:22:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:14,610 INFO L93 Difference]: Finished difference Result 40246 states and 71509 transitions. [2024-11-27 23:22:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:14,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-27 23:22:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:14,772 INFO L225 Difference]: With dead ends: 40246 [2024-11-27 23:22:14,772 INFO L226 Difference]: Without dead ends: 20204 [2024-11-27 23:22:15,103 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 23:22:15,103 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 11 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:15,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2718 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20204 states. [2024-11-27 23:22:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20204 to 20140. [2024-11-27 23:22:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 15468 states have (on average 1.5776441686061546) internal successors, (24403), 16018 states have internal predecessors, (24403), 3642 states have call successors, (3642), 1030 states have call predecessors, (3642), 1029 states have return successors, (6852), 3611 states have call predecessors, (6852), 3624 states have call successors, (6852) [2024-11-27 23:22:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 34897 transitions. [2024-11-27 23:22:16,344 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 34897 transitions. Word has length 146 [2024-11-27 23:22:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:16,345 INFO L471 AbstractCegarLoop]: Abstraction has 20140 states and 34897 transitions. [2024-11-27 23:22:16,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:22:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 34897 transitions. [2024-11-27 23:22:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:22:16,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:16,356 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:16,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:22:16,357 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:16,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 259478515, now seen corresponding path program 1 times [2024-11-27 23:22:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400730860] [2024-11-27 23:22:16,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 23:22:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400730860] [2024-11-27 23:22:16,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400730860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:16,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826261203] [2024-11-27 23:22:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:16,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:16,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:16,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:16,682 INFO L87 Difference]: Start difference. First operand 20140 states and 34897 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:22:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:19,923 INFO L93 Difference]: Finished difference Result 60557 states and 112515 transitions. [2024-11-27 23:22:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-11-27 23:22:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:20,461 INFO L225 Difference]: With dead ends: 60557 [2024-11-27 23:22:20,461 INFO L226 Difference]: Without dead ends: 40435 [2024-11-27 23:22:20,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:20,667 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 916 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:20,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4636 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:22:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40435 states. [2024-11-27 23:22:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40435 to 40270. [2024-11-27 23:22:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40270 states, 30932 states have (on average 1.5752295357558515) internal successors, (48725), 32026 states have internal predecessors, (48725), 7268 states have call successors, (7268), 2054 states have call predecessors, (7268), 2069 states have return successors, (17860), 7229 states have call predecessors, (17860), 7234 states have call successors, (17860) [2024-11-27 23:22:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40270 states to 40270 states and 73853 transitions. [2024-11-27 23:22:24,177 INFO L78 Accepts]: Start accepts. Automaton has 40270 states and 73853 transitions. Word has length 156 [2024-11-27 23:22:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:24,178 INFO L471 AbstractCegarLoop]: Abstraction has 40270 states and 73853 transitions. [2024-11-27 23:22:24,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:22:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 40270 states and 73853 transitions. [2024-11-27 23:22:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 23:22:24,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:24,185 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:24,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:22:24,186 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:24,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1868300399, now seen corresponding path program 1 times [2024-11-27 23:22:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098895456] [2024-11-27 23:22:24,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 23:22:24,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:24,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098895456] [2024-11-27 23:22:24,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098895456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:24,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:24,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023394052] [2024-11-27 23:22:24,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:24,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:24,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:24,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:24,311 INFO L87 Difference]: Start difference. First operand 40270 states and 73853 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:22:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:27,004 INFO L93 Difference]: Finished difference Result 80842 states and 154011 transitions. [2024-11-27 23:22:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-11-27 23:22:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:27,701 INFO L225 Difference]: With dead ends: 80842 [2024-11-27 23:22:27,701 INFO L226 Difference]: Without dead ends: 40590 [2024-11-27 23:22:28,238 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 23:22:28,239 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 10 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:28,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2718 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40590 states. [2024-11-27 23:22:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40590 to 40462. [2024-11-27 23:22:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40462 states, 31108 states have (on average 1.5724893917963225) internal successors, (48917), 32202 states have internal predecessors, (48917), 7268 states have call successors, (7268), 2086 states have call predecessors, (7268), 2085 states have return successors, (17844), 7213 states have call predecessors, (17844), 7234 states have call successors, (17844) [2024-11-27 23:22:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40462 states to 40462 states and 74029 transitions. [2024-11-27 23:22:31,056 INFO L78 Accepts]: Start accepts. Automaton has 40462 states and 74029 transitions. Word has length 157 [2024-11-27 23:22:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:31,057 INFO L471 AbstractCegarLoop]: Abstraction has 40462 states and 74029 transitions. [2024-11-27 23:22:31,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:22:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 40462 states and 74029 transitions. [2024-11-27 23:22:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 23:22:31,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:31,064 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:31,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:22:31,064 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:31,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1507101688, now seen corresponding path program 1 times [2024-11-27 23:22:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866574358] [2024-11-27 23:22:31,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-27 23:22:31,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866574358] [2024-11-27 23:22:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866574358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225095827] [2024-11-27 23:22:31,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:31,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:31,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:31,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:22:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:31,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:22:31,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-27 23:22:32,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:32,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225095827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:32,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:22:32,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 23:22:32,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152632338] [2024-11-27 23:22:32,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:32,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:22:32,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:32,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:22:32,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:32,010 INFO L87 Difference]: Start difference. First operand 40462 states and 74029 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 23:22:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:35,629 INFO L93 Difference]: Finished difference Result 120223 states and 223487 transitions. [2024-11-27 23:22:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:22:35,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2024-11-27 23:22:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:36,294 INFO L225 Difference]: With dead ends: 120223 [2024-11-27 23:22:36,294 INFO L226 Difference]: Without dead ends: 79810 [2024-11-27 23:22:36,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:36,907 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 921 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:36,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:22:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79810 states. [2024-11-27 23:22:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79810 to 79245. [2024-11-27 23:22:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79245 states, 61126 states have (on average 1.5758269803357001) internal successors, (96324), 63199 states have internal predecessors, (96324), 14049 states have call successors, (14049), 4038 states have call predecessors, (14049), 4069 states have return successors, (35421), 14055 states have call predecessors, (35421), 13983 states have call successors, (35421) [2024-11-27 23:22:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79245 states to 79245 states and 145794 transitions. [2024-11-27 23:22:41,619 INFO L78 Accepts]: Start accepts. Automaton has 79245 states and 145794 transitions. Word has length 168 [2024-11-27 23:22:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:41,619 INFO L471 AbstractCegarLoop]: Abstraction has 79245 states and 145794 transitions. [2024-11-27 23:22:41,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 23:22:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 79245 states and 145794 transitions. [2024-11-27 23:22:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 23:22:41,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:41,627 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:41,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:22:41,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:41,828 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:41,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2093907702, now seen corresponding path program 1 times [2024-11-27 23:22:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182000355] [2024-11-27 23:22:41,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-27 23:22:42,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182000355] [2024-11-27 23:22:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182000355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026253239] [2024-11-27 23:22:42,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:42,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:42,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:42,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22b4204-a4e5-47f4-ba77-701af0fe1d88/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:22:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:22:42,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:22:42,884 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026253239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:42,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:22:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-27 23:22:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276287700] [2024-11-27 23:22:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:42,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:42,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:42,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:22:42,888 INFO L87 Difference]: Start difference. First operand 79245 states and 145794 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)