./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/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 f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:27:30,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:27:30,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:27:30,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:27:30,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:27:30,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:27:30,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:27:30,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:27:30,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:27:30,385 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:27:30,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:27:30,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:27:30,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:27:30,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:27:30,386 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:27:30,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:27:30,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:27:30,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:27:30,389 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:27:30,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:30,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:30,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:30,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:30,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:27:30,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:30,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:30,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:30,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:30,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:27:30,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:27:30,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:27:30,393 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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/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 -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2024-11-27 23:27:30,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:27:30,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:27:30,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:27:30,765 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:27:30,765 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:27:30,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-11-27 23:27:33,916 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/data/7ab5e1d64/a655bc1b1964434a8bf67580e25b2860/FLAGe3f394713 [2024-11-27 23:27:34,383 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:27:34,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-11-27 23:27:34,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/data/7ab5e1d64/a655bc1b1964434a8bf67580e25b2860/FLAGe3f394713 [2024-11-27 23:27:34,446 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/data/7ab5e1d64/a655bc1b1964434a8bf67580e25b2860 [2024-11-27 23:27:34,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:27:34,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:27:34,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:34,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:27:34,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:27:34,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:34" (1/1) ... [2024-11-27 23:27:34,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d10408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:34, skipping insertion in model container [2024-11-27 23:27:34,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:34" (1/1) ... [2024-11-27 23:27:34,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:27:34,817 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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-11-27 23:27:35,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:35,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:27:35,272 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-27 23:27:35,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2024-11-27 23:27:35,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2024-11-27 23:27:35,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2024-11-27 23:27:35,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2024-11-27 23:27:35,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2024-11-27 23:27:35,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2024-11-27 23:27:35,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2024-11-27 23:27:35,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2024-11-27 23:27:35,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2024-11-27 23:27:35,285 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_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-11-27 23:27:35,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:35,539 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:27:35,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35 WrapperNode [2024-11-27 23:27:35,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:35,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:35,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:27:35,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:27:35,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,625 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 837 [2024-11-27 23:27:35,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:35,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:27:35,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:27:35,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:27:35,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,687 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 23:27:35,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:27:35,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:27:35,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:27:35,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:27:35,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (1/1) ... [2024-11-27 23:27:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:35,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:27:35,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:27:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-27 23:27:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-27 23:27:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:27:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-27 23:27:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-27 23:27:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 23:27:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 23:27:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-27 23:27:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-27 23:27:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 23:27:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 23:27:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 23:27:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 23:27:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-27 23:27:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-27 23:27:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 23:27:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 23:27:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 23:27:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 23:27:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 23:27:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 23:27:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 23:27:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 23:27:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 23:27:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 23:27:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 23:27:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 23:27:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 23:27:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 23:27:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 23:27:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 23:27:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 23:27:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 23:27:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 23:27:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:27:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:27:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:27:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:27:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:27:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 23:27:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 23:27:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 23:27:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 23:27:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 23:27:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 23:27:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 23:27:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 23:27:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 23:27:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 23:27:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-27 23:27:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-27 23:27:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-27 23:27:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-27 23:27:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:27:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:27:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 23:27:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 23:27:36,106 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:27:36,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:27:38,014 INFO L? ?]: Removed 464 outVars from TransFormulas that were not future-live. [2024-11-27 23:27:38,014 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:27:38,044 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:27:38,044 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 23:27:38,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:38 BoogieIcfgContainer [2024-11-27 23:27:38,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:27:38,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:27:38,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:27:38,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:27:38,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:27:34" (1/3) ... [2024-11-27 23:27:38,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ceb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:38, skipping insertion in model container [2024-11-27 23:27:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:35" (2/3) ... [2024-11-27 23:27:38,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ceb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:38, skipping insertion in model container [2024-11-27 23:27:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:38" (3/3) ... [2024-11-27 23:27:38,059 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2024-11-27 23:27:38,079 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:27:38,083 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product22.cil.c that has 27 procedures, 596 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 23:27:38,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:27:38,232 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;@522fb2f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:27:38,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:27:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 466 states have (on average 1.6952789699570816) internal successors, (790), 486 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-27 23:27:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 23:27:38,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:38,286 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:38,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:38,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1305719938, now seen corresponding path program 1 times [2024-11-27 23:27:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:38,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997388083] [2024-11-27 23:27:38,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:27:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997388083] [2024-11-27 23:27:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997388083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819796515] [2024-11-27 23:27:39,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:39,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:39,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:39,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:39,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:27:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:39,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:27:39,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:27:39,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:39,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819796515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:39,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:39,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-27 23:27:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096059279] [2024-11-27 23:27:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:39,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:27:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:39,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:27:39,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:39,859 INFO L87 Difference]: Start difference. First operand has 596 states, 466 states have (on average 1.6952789699570816) internal successors, (790), 486 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:40,024 INFO L93 Difference]: Finished difference Result 1170 states and 1971 transitions. [2024-11-27 23:27:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:27:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-27 23:27:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:40,046 INFO L225 Difference]: With dead ends: 1170 [2024-11-27 23:27:40,046 INFO L226 Difference]: Without dead ends: 586 [2024-11-27 23:27:40,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:40,060 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:40,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-27 23:27:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2024-11-27 23:27:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.6775599128540306) internal successors, (770), 477 states have internal predecessors, (770), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 971 transitions. [2024-11-27 23:27:40,160 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 971 transitions. Word has length 83 [2024-11-27 23:27:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:40,162 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 971 transitions. [2024-11-27 23:27:40,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 971 transitions. [2024-11-27 23:27:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:27:40,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:40,170 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:40,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:27:40,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:27:40,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:40,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2139893227, now seen corresponding path program 1 times [2024-11-27 23:27:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321878664] [2024-11-27 23:27:40,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:27:40,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:40,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321878664] [2024-11-27 23:27:40,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321878664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054649453] [2024-11-27 23:27:40,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:40,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:40,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:40,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:27:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:41,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:41,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:27:41,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:41,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054649453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:41,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:41,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-27 23:27:41,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576685026] [2024-11-27 23:27:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:41,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:41,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:41,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:41,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:27:41,599 INFO L87 Difference]: Start difference. First operand 586 states and 971 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:41,817 INFO L93 Difference]: Finished difference Result 1173 states and 1950 transitions. [2024-11-27 23:27:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-11-27 23:27:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:41,829 INFO L225 Difference]: With dead ends: 1173 [2024-11-27 23:27:41,829 INFO L226 Difference]: Without dead ends: 595 [2024-11-27 23:27:41,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:41,834 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 17 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:41,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2866 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-27 23:27:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-27 23:27:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 467 states have (on average 1.6788008565310493) internal successors, (784), 485 states have internal predecessors, (784), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 985 transitions. [2024-11-27 23:27:41,907 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 985 transitions. Word has length 99 [2024-11-27 23:27:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:41,908 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 985 transitions. [2024-11-27 23:27:41,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 985 transitions. [2024-11-27 23:27:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-27 23:27:41,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:41,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:41,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:42,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 23:27:42,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:42,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 202058560, now seen corresponding path program 1 times [2024-11-27 23:27:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979303629] [2024-11-27 23:27:42,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:42,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979303629] [2024-11-27 23:27:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979303629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078829563] [2024-11-27 23:27:42,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:42,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:42,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:42,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:42,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:27:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:42,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:42,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:42,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078829563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:42,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-27 23:27:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492926933] [2024-11-27 23:27:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:42,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:42,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:42,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:42,989 INFO L87 Difference]: Start difference. First operand 595 states and 985 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:43,483 INFO L93 Difference]: Finished difference Result 1243 states and 2074 transitions. [2024-11-27 23:27:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:43,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2024-11-27 23:27:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:43,497 INFO L225 Difference]: With dead ends: 1243 [2024-11-27 23:27:43,497 INFO L226 Difference]: Without dead ends: 658 [2024-11-27 23:27:43,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:27:43,504 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 122 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:43,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2761 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:27:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-27 23:27:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 640. [2024-11-27 23:27:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 511 states have (on average 1.6986301369863013) internal successors, (868), 529 states have internal predecessors, (868), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1069 transitions. [2024-11-27 23:27:43,555 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1069 transitions. Word has length 85 [2024-11-27 23:27:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:43,556 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1069 transitions. [2024-11-27 23:27:43,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1069 transitions. [2024-11-27 23:27:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:27:43,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:43,561 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:43,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:27:43,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:43,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:43,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 595940684, now seen corresponding path program 1 times [2024-11-27 23:27:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201964044] [2024-11-27 23:27:43,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:44,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201964044] [2024-11-27 23:27:44,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201964044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401523844] [2024-11-27 23:27:44,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:44,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:44,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:44,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:27:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:44,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:44,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401523844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:44,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:27:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245638758] [2024-11-27 23:27:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:44,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:44,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:44,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:44,555 INFO L87 Difference]: Start difference. First operand 640 states and 1069 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:44,746 INFO L93 Difference]: Finished difference Result 1295 states and 2165 transitions. [2024-11-27 23:27:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2024-11-27 23:27:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:44,754 INFO L225 Difference]: With dead ends: 1295 [2024-11-27 23:27:44,754 INFO L226 Difference]: Without dead ends: 665 [2024-11-27 23:27:44,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:44,759 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 89 mSDsluCounter, 4698 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:44,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5656 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-27 23:27:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 653. [2024-11-27 23:27:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 521 states have (on average 1.6948176583493282) internal successors, (883), 541 states have internal predecessors, (883), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-27 23:27:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1090 transitions. [2024-11-27 23:27:44,822 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1090 transitions. Word has length 87 [2024-11-27 23:27:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:44,822 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1090 transitions. [2024-11-27 23:27:44,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1090 transitions. [2024-11-27 23:27:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:27:44,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:44,829 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:44,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:27:45,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:45,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:45,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -870342570, now seen corresponding path program 1 times [2024-11-27 23:27:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021594805] [2024-11-27 23:27:45,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021594805] [2024-11-27 23:27:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021594805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164286100] [2024-11-27 23:27:45,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:45,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:45,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:45,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:27:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:45,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:45,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:27:45,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164286100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:27:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011879555] [2024-11-27 23:27:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:45,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:45,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:45,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:45,879 INFO L87 Difference]: Start difference. First operand 653 states and 1090 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:46,073 INFO L93 Difference]: Finished difference Result 1315 states and 2196 transitions. [2024-11-27 23:27:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:46,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-27 23:27:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:46,080 INFO L225 Difference]: With dead ends: 1315 [2024-11-27 23:27:46,081 INFO L226 Difference]: Without dead ends: 674 [2024-11-27 23:27:46,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:46,085 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 100 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:46,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5644 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-27 23:27:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 653. [2024-11-27 23:27:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 521 states have (on average 1.6948176583493282) internal successors, (883), 541 states have internal predecessors, (883), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-27 23:27:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1090 transitions. [2024-11-27 23:27:46,134 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1090 transitions. Word has length 104 [2024-11-27 23:27:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:46,135 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1090 transitions. [2024-11-27 23:27:46,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1090 transitions. [2024-11-27 23:27:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:27:46,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:46,140 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:46,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:27:46,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:46,341 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:46,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash -322872208, now seen corresponding path program 1 times [2024-11-27 23:27:46,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:46,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188485447] [2024-11-27 23:27:46,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:27:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188485447] [2024-11-27 23:27:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188485447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:46,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344881130] [2024-11-27 23:27:46,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:46,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:46,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:46,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:27:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:46,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 23:27:46,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344881130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:27:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854750449] [2024-11-27 23:27:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:46,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:46,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:46,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:46,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:46,951 INFO L87 Difference]: Start difference. First operand 653 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:47,082 INFO L93 Difference]: Finished difference Result 1309 states and 2186 transitions. [2024-11-27 23:27:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-11-27 23:27:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:47,090 INFO L225 Difference]: With dead ends: 1309 [2024-11-27 23:27:47,090 INFO L226 Difference]: Without dead ends: 664 [2024-11-27 23:27:47,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:47,094 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 12 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:47,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2868 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-27 23:27:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2024-11-27 23:27:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-11-27 23:27:47,175 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 104 [2024-11-27 23:27:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:47,176 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-11-27 23:27:47,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-11-27 23:27:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 23:27:47,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:47,180 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:47,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:27:47,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:47,381 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:47,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash -313595440, now seen corresponding path program 1 times [2024-11-27 23:27:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644511529] [2024-11-27 23:27:47,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644511529] [2024-11-27 23:27:47,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644511529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726645841] [2024-11-27 23:27:47,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:47,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:47,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:47,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:27:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:47,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:47,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:48,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726645841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:48,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:48,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-27 23:27:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676504763] [2024-11-27 23:27:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:48,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:48,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:48,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:48,083 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:48,256 INFO L93 Difference]: Finished difference Result 1324 states and 2199 transitions. [2024-11-27 23:27:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:48,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-27 23:27:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:48,264 INFO L225 Difference]: With dead ends: 1324 [2024-11-27 23:27:48,264 INFO L226 Difference]: Without dead ends: 685 [2024-11-27 23:27:48,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:48,269 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 111 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:48,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5632 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-27 23:27:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 662. [2024-11-27 23:27:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-11-27 23:27:48,312 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 89 [2024-11-27 23:27:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:48,313 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-11-27 23:27:48,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-11-27 23:27:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 23:27:48,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:48,317 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:48,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:48,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:27:48,518 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:48,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -571437870, now seen corresponding path program 1 times [2024-11-27 23:27:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:48,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870266586] [2024-11-27 23:27:48,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:48,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870266586] [2024-11-27 23:27:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870266586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787305448] [2024-11-27 23:27:48,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:48,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:48,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:27:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:49,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:27:49,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:49,143 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787305448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:49,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:49,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:27:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530009195] [2024-11-27 23:27:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:49,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:27:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:49,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:27:49,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:49,146 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:49,400 INFO L93 Difference]: Finished difference Result 1327 states and 2203 transitions. [2024-11-27 23:27:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:27:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-27 23:27:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:49,408 INFO L225 Difference]: With dead ends: 1327 [2024-11-27 23:27:49,408 INFO L226 Difference]: Without dead ends: 688 [2024-11-27 23:27:49,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:27:49,413 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 95 mSDsluCounter, 5591 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6539 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:49,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6539 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-27 23:27:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 662. [2024-11-27 23:27:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-11-27 23:27:49,454 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 89 [2024-11-27 23:27:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:49,454 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-11-27 23:27:49,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-11-27 23:27:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-27 23:27:49,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:49,458 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:49,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:49,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:49,659 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:49,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2056575677, now seen corresponding path program 1 times [2024-11-27 23:27:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:49,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211305975] [2024-11-27 23:27:49,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:49,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:49,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211305975] [2024-11-27 23:27:49,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211305975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186083812] [2024-11-27 23:27:49,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:49,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:49,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:49,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:49,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:27:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:50,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:27:50,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:50,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186083812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:27:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085839966] [2024-11-27 23:27:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:50,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:27:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:50,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:27:50,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:50,302 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:50,565 INFO L93 Difference]: Finished difference Result 1327 states and 2203 transitions. [2024-11-27 23:27:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:27:50,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-11-27 23:27:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:50,573 INFO L225 Difference]: With dead ends: 1327 [2024-11-27 23:27:50,573 INFO L226 Difference]: Without dead ends: 688 [2024-11-27 23:27:50,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:27:50,577 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 105 mSDsluCounter, 5579 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:50,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-27 23:27:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 662. [2024-11-27 23:27:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-11-27 23:27:50,611 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 90 [2024-11-27 23:27:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:50,612 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-11-27 23:27:50,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 23:27:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-11-27 23:27:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 23:27:50,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:50,615 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:50,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:27:50,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 23:27:50,820 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:50,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1443976590, now seen corresponding path program 1 times [2024-11-27 23:27:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305699883] [2024-11-27 23:27:50,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305699883] [2024-11-27 23:27:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305699883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882330997] [2024-11-27 23:27:51,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:51,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:51,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:27:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:51,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:27:51,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:27:51,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882330997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:51,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:27:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926700424] [2024-11-27 23:27:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:51,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:27:51,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:51,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:27:51,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:27:51,523 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:51,760 INFO L93 Difference]: Finished difference Result 1318 states and 2188 transitions. [2024-11-27 23:27:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:27:51,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2024-11-27 23:27:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:51,769 INFO L225 Difference]: With dead ends: 1318 [2024-11-27 23:27:51,769 INFO L226 Difference]: Without dead ends: 679 [2024-11-27 23:27:51,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:27:51,774 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 115 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:51,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6515 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-27 23:27:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 662. [2024-11-27 23:27:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-11-27 23:27:51,815 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 107 [2024-11-27 23:27:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:51,815 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-11-27 23:27:51,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-11-27 23:27:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 23:27:51,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:51,819 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:51,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:27:52,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:27:52,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:52,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -143998187, now seen corresponding path program 1 times [2024-11-27 23:27:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732886436] [2024-11-27 23:27:52,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732886436] [2024-11-27 23:27:52,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732886436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216931109] [2024-11-27 23:27:52,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:52,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:52,120 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:52,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:27:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:52,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:52,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:27:52,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:52,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216931109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:52,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:52,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:27:52,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271641854] [2024-11-27 23:27:52,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:52,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:52,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:52,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:52,511 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:52,608 INFO L93 Difference]: Finished difference Result 1290 states and 2148 transitions. [2024-11-27 23:27:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:52,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-27 23:27:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:52,615 INFO L225 Difference]: With dead ends: 1290 [2024-11-27 23:27:52,615 INFO L226 Difference]: Without dead ends: 662 [2024-11-27 23:27:52,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:52,619 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 20 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:52,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2862 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-27 23:27:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-27 23:27:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6767485822306238) internal successors, (887), 549 states have internal predecessors, (887), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-27 23:27:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1093 transitions. [2024-11-27 23:27:52,651 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1093 transitions. Word has length 91 [2024-11-27 23:27:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:52,651 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1093 transitions. [2024-11-27 23:27:52,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1093 transitions. [2024-11-27 23:27:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-27 23:27:52,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:52,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:52,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:27:52,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:27:52,857 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:52,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1082141184, now seen corresponding path program 1 times [2024-11-27 23:27:52,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:52,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766402143] [2024-11-27 23:27:52,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766402143] [2024-11-27 23:27:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766402143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728336134] [2024-11-27 23:27:52,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:52,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:52,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:52,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:27:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:53,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:53,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:27:53,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728336134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:53,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:27:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351095795] [2024-11-27 23:27:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:53,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:53,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:53,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:53,361 INFO L87 Difference]: Start difference. First operand 662 states and 1093 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:53,688 INFO L93 Difference]: Finished difference Result 1319 states and 2188 transitions. [2024-11-27 23:27:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-11-27 23:27:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:53,696 INFO L225 Difference]: With dead ends: 1319 [2024-11-27 23:27:53,697 INFO L226 Difference]: Without dead ends: 749 [2024-11-27 23:27:53,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:53,702 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 171 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:53,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2734 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:27:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-27 23:27:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 707. [2024-11-27 23:27:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 573 states have (on average 1.6945898778359512) internal successors, (971), 593 states have internal predecessors, (971), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-27 23:27:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1176 transitions. [2024-11-27 23:27:53,739 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1176 transitions. Word has length 92 [2024-11-27 23:27:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:53,740 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1176 transitions. [2024-11-27 23:27:53,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1176 transitions. [2024-11-27 23:27:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 23:27:53,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:53,743 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:53,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:53,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:53,944 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:53,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 105704088, now seen corresponding path program 1 times [2024-11-27 23:27:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728941373] [2024-11-27 23:27:53,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:27:54,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728941373] [2024-11-27 23:27:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728941373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858361376] [2024-11-27 23:27:54,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:54,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:54,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:54,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:54,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:27:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:54,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:54,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:27:54,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858361376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:27:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967085025] [2024-11-27 23:27:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:54,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:54,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:54,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:54,584 INFO L87 Difference]: Start difference. First operand 707 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:54,739 INFO L93 Difference]: Finished difference Result 1312 states and 2175 transitions. [2024-11-27 23:27:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:54,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2024-11-27 23:27:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:54,748 INFO L225 Difference]: With dead ends: 1312 [2024-11-27 23:27:54,748 INFO L226 Difference]: Without dead ends: 742 [2024-11-27 23:27:54,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:27:54,753 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 89 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:54,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5665 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-27 23:27:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2024-11-27 23:27:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-27 23:27:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-11-27 23:27:54,794 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 109 [2024-11-27 23:27:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:54,795 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-11-27 23:27:54,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-11-27 23:27:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:27:54,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:54,799 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:54,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:27:54,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:55,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:55,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1927892131, now seen corresponding path program 1 times [2024-11-27 23:27:55,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231873917] [2024-11-27 23:27:55,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:27:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231873917] [2024-11-27 23:27:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231873917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12561515] [2024-11-27 23:27:55,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:55,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:55,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:27:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:55,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:27:55,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:27:55,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12561515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:27:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074149582] [2024-11-27 23:27:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:55,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:55,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:55,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:55,615 INFO L87 Difference]: Start difference. First operand 720 states and 1195 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:55,765 INFO L93 Difference]: Finished difference Result 1321 states and 2189 transitions. [2024-11-27 23:27:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-27 23:27:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:55,774 INFO L225 Difference]: With dead ends: 1321 [2024-11-27 23:27:55,774 INFO L226 Difference]: Without dead ends: 751 [2024-11-27 23:27:55,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:27:55,778 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 100 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:55,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5653 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-27 23:27:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 720. [2024-11-27 23:27:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-27 23:27:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-11-27 23:27:55,820 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 110 [2024-11-27 23:27:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:55,821 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-11-27 23:27:55,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-11-27 23:27:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:27:55,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:55,825 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:55,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:27:56,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,030 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:56,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash -285036579, now seen corresponding path program 1 times [2024-11-27 23:27:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387014382] [2024-11-27 23:27:56,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:27:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387014382] [2024-11-27 23:27:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387014382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504721795] [2024-11-27 23:27:56,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:56,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:56,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:27:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:27:56,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:27:56,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:56,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504721795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:56,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:56,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:27:56,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412877050] [2024-11-27 23:27:56,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:56,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:27:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:56,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:27:56,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:27:56,612 INFO L87 Difference]: Start difference. First operand 720 states and 1195 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:56,826 INFO L93 Difference]: Finished difference Result 1324 states and 2192 transitions. [2024-11-27 23:27:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:27:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-27 23:27:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:56,833 INFO L225 Difference]: With dead ends: 1324 [2024-11-27 23:27:56,833 INFO L226 Difference]: Without dead ends: 754 [2024-11-27 23:27:56,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:56,839 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 96 mSDsluCounter, 5600 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:56,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6549 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-27 23:27:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 720. [2024-11-27 23:27:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-27 23:27:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-11-27 23:27:56,874 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 110 [2024-11-27 23:27:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:56,874 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-11-27 23:27:56,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-11-27 23:27:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:27:56,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:56,877 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:56,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:27:57,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:57,078 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:57,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash 53288255, now seen corresponding path program 1 times [2024-11-27 23:27:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873476614] [2024-11-27 23:27:57,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:57,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:27:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873476614] [2024-11-27 23:27:57,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873476614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:57,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394085390] [2024-11-27 23:27:57,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:57,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:57,180 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:57,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:27:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:57,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:27:57,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:27:57,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394085390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:57,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:27:57,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055163928] [2024-11-27 23:27:57,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:57,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:57,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:57,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:57,672 INFO L87 Difference]: Start difference. First operand 720 states and 1195 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:57,746 INFO L93 Difference]: Finished difference Result 1366 states and 2271 transitions. [2024-11-27 23:27:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:57,746 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-11-27 23:27:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:57,754 INFO L225 Difference]: With dead ends: 1366 [2024-11-27 23:27:57,754 INFO L226 Difference]: Without dead ends: 720 [2024-11-27 23:27:57,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:57,759 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 2 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:57,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2871 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-27 23:27:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-11-27 23:27:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.686106346483705) internal successors, (983), 605 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-27 23:27:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1192 transitions. [2024-11-27 23:27:57,797 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1192 transitions. Word has length 110 [2024-11-27 23:27:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:57,799 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1192 transitions. [2024-11-27 23:27:57,799 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 23:27:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1192 transitions. [2024-11-27 23:27:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:27:57,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:57,803 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:57,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:27:58,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:27:58,007 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:58,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash 379820122, now seen corresponding path program 1 times [2024-11-27 23:27:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287031441] [2024-11-27 23:27:58,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:58,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:27:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287031441] [2024-11-27 23:27:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287031441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027573850] [2024-11-27 23:27:58,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:58,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:58,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:27:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:58,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:27:58,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:27:58,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:58,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027573850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:58,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:58,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:27:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528304399] [2024-11-27 23:27:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:58,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:27:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:58,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:27:58,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:27:58,597 INFO L87 Difference]: Start difference. First operand 720 states and 1192 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:58,815 INFO L93 Difference]: Finished difference Result 1315 states and 2175 transitions. [2024-11-27 23:27:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:27:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2024-11-27 23:27:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:58,822 INFO L225 Difference]: With dead ends: 1315 [2024-11-27 23:27:58,822 INFO L226 Difference]: Without dead ends: 745 [2024-11-27 23:27:58,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:58,825 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 106 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:58,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6519 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-11-27 23:27:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 720. [2024-11-27 23:27:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.686106346483705) internal successors, (983), 605 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-27 23:27:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1192 transitions. [2024-11-27 23:27:58,861 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1192 transitions. Word has length 111 [2024-11-27 23:27:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:58,861 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1192 transitions. [2024-11-27 23:27:58,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 23:27:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1192 transitions. [2024-11-27 23:27:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 23:27:58,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:58,867 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:58,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:27:59,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:27:59,068 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:59,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash -854332181, now seen corresponding path program 1 times [2024-11-27 23:27:59,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:59,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122949780] [2024-11-27 23:27:59,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:27:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122949780] [2024-11-27 23:27:59,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122949780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952510195] [2024-11-27 23:27:59,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:59,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:59,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:59,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:59,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:27:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:59,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:27:59,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:59,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952510195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:59,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:27:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-27 23:27:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106271903] [2024-11-27 23:27:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:59,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:59,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:59,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:59,769 INFO L87 Difference]: Start difference. First operand 720 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:27:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:59,976 INFO L93 Difference]: Finished difference Result 1848 states and 3086 transitions. [2024-11-27 23:27:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:59,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-11-27 23:27:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:59,990 INFO L225 Difference]: With dead ends: 1848 [2024-11-27 23:27:59,990 INFO L226 Difference]: Without dead ends: 1282 [2024-11-27 23:27:59,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:59,995 INFO L435 NwaCegarLoop]: 1027 mSDtfsCounter, 893 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:59,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1948 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:59,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-11-27 23:28:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1217. [2024-11-27 23:28:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 987 states have (on average 1.6919959473150963) internal successors, (1670), 1018 states have internal predecessors, (1670), 178 states have call successors, (178), 50 states have call predecessors, (178), 51 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-27 23:28:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2033 transitions. [2024-11-27 23:28:00,080 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2033 transitions. Word has length 96 [2024-11-27 23:28:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:00,080 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 2033 transitions. [2024-11-27 23:28:00,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 23:28:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2033 transitions. [2024-11-27 23:28:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-27 23:28:00,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:00,089 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 23:28:00,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:28:00,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:28:00,290 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:00,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1735996436, now seen corresponding path program 1 times [2024-11-27 23:28:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387519759] [2024-11-27 23:28:00,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-27 23:28:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387519759] [2024-11-27 23:28:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387519759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779111306] [2024-11-27 23:28:00,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:00,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:00,560 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:00,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:28:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:01,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:28:01,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:28:01,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 23:28:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779111306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:01,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2024-11-27 23:28:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462690375] [2024-11-27 23:28:01,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:28:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:01,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:28:01,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:28:01,662 INFO L87 Difference]: Start difference. First operand 1217 states and 2033 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-27 23:28:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:05,982 INFO L93 Difference]: Finished difference Result 3482 states and 5818 transitions. [2024-11-27 23:28:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:28:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) Word has length 187 [2024-11-27 23:28:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:06,004 INFO L225 Difference]: With dead ends: 3482 [2024-11-27 23:28:06,005 INFO L226 Difference]: Without dead ends: 2253 [2024-11-27 23:28:06,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:28:06,012 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 1625 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 4497 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:06,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 1999 Invalid, 4805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [308 Valid, 4497 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 23:28:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2024-11-27 23:28:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 1993. [2024-11-27 23:28:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1595 states have (on average 1.6539184952978057) internal successors, (2638), 1635 states have internal predecessors, (2638), 310 states have call successors, (310), 82 states have call predecessors, (310), 87 states have return successors, (356), 289 states have call predecessors, (356), 304 states have call successors, (356) [2024-11-27 23:28:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3304 transitions. [2024-11-27 23:28:06,181 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3304 transitions. Word has length 187 [2024-11-27 23:28:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:06,182 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 3304 transitions. [2024-11-27 23:28:06,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-27 23:28:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3304 transitions. [2024-11-27 23:28:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-27 23:28:06,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:06,193 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:06,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:28:06,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:06,394 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:06,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash -479637947, now seen corresponding path program 1 times [2024-11-27 23:28:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:06,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730678680] [2024-11-27 23:28:06,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:28:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730678680] [2024-11-27 23:28:06,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730678680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:06,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653134605] [2024-11-27 23:28:06,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:06,721 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:28:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:07,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:28:07,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:28:07,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:28:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653134605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:07,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-27 23:28:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518788616] [2024-11-27 23:28:07,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:07,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:28:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:07,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:28:07,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:07,989 INFO L87 Difference]: Start difference. First operand 1993 states and 3304 transitions. Second operand has 12 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 6 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2024-11-27 23:28:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:13,723 INFO L93 Difference]: Finished difference Result 4144 states and 6885 transitions. [2024-11-27 23:28:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:28:13,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 6 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) Word has length 188 [2024-11-27 23:28:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:13,740 INFO L225 Difference]: With dead ends: 4144 [2024-11-27 23:28:13,740 INFO L226 Difference]: Without dead ends: 2168 [2024-11-27 23:28:13,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 373 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:28:13,752 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 1943 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 8446 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 8668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 8446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:13,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 3609 Invalid, 8668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [222 Valid, 8446 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 23:28:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2024-11-27 23:28:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1984. [2024-11-27 23:28:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1588 states have (on average 1.649874055415617) internal successors, (2620), 1626 states have internal predecessors, (2620), 308 states have call successors, (308), 82 states have call predecessors, (308), 87 states have return successors, (349), 289 states have call predecessors, (349), 302 states have call successors, (349) [2024-11-27 23:28:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3277 transitions. [2024-11-27 23:28:13,892 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3277 transitions. Word has length 188 [2024-11-27 23:28:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:13,893 INFO L471 AbstractCegarLoop]: Abstraction has 1984 states and 3277 transitions. [2024-11-27 23:28:13,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 6 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2024-11-27 23:28:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3277 transitions. [2024-11-27 23:28:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:28:13,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:13,911 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:13,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:28:14,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efd2b80-4886-49b2-bfc2-f4db3d6f6811/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:14,112 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:14,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1640005175, now seen corresponding path program 1 times [2024-11-27 23:28:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28405206] [2024-11-27 23:28:14,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:28:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28405206] [2024-11-27 23:28:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28405206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:14,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:14,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:28:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101626045] [2024-11-27 23:28:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:14,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:28:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:14,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:28:14,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:28:14,354 INFO L87 Difference]: Start difference. First operand 1984 states and 3277 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-27 23:28:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:14,531 INFO L93 Difference]: Finished difference Result 3910 states and 6470 transitions. [2024-11-27 23:28:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2024-11-27 23:28:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:14,546 INFO L225 Difference]: With dead ends: 3910 [2024-11-27 23:28:14,546 INFO L226 Difference]: Without dead ends: 2034 [2024-11-27 23:28:14,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:28:14,557 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 126 mSDsluCounter, 4652 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5607 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:14,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5607 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:28:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2024-11-27 23:28:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1984. [2024-11-27 23:28:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1588 states have (on average 1.649874055415617) internal successors, (2620), 1626 states have internal predecessors, (2620), 308 states have call successors, (308), 82 states have call predecessors, (308), 87 states have return successors, (349), 289 states have call predecessors, (349), 302 states have call successors, (349) [2024-11-27 23:28:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3277 transitions. [2024-11-27 23:28:14,675 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3277 transitions. Word has length 136 [2024-11-27 23:28:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:14,675 INFO L471 AbstractCegarLoop]: Abstraction has 1984 states and 3277 transitions. [2024-11-27 23:28:14,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-27 23:28:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3277 transitions. [2024-11-27 23:28:14,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:28:14,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:14,683 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:14,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:28:14,684 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:14,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash -711515921, now seen corresponding path program 1 times [2024-11-27 23:28:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555180819] [2024-11-27 23:28:14,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:28:14,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:14,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555180819] [2024-11-27 23:28:14,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555180819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:14,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:14,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:28:14,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121677144] [2024-11-27 23:28:14,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:14,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:28:14,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:14,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:28:14,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:28:14,851 INFO L87 Difference]: Start difference. First operand 1984 states and 3277 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:28:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:14,955 INFO L93 Difference]: Finished difference Result 3923 states and 6497 transitions. [2024-11-27 23:28:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:28:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2024-11-27 23:28:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:14,968 INFO L225 Difference]: With dead ends: 3923 [2024-11-27 23:28:14,968 INFO L226 Difference]: Without dead ends: 1942 [2024-11-27 23:28:14,977 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 23:28:14,979 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 8 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:14,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2862 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:28:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2024-11-27 23:28:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1942. [2024-11-27 23:28:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1549 states have (on average 1.644286636539703) internal successors, (2547), 1585 states have internal predecessors, (2547), 307 states have call successors, (307), 82 states have call predecessors, (307), 85 states have return successors, (346), 288 states have call predecessors, (346), 301 states have call successors, (346) [2024-11-27 23:28:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3200 transitions. [2024-11-27 23:28:15,072 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3200 transitions. Word has length 136 [2024-11-27 23:28:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:15,073 INFO L471 AbstractCegarLoop]: Abstraction has 1942 states and 3200 transitions. [2024-11-27 23:28:15,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:28:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3200 transitions. [2024-11-27 23:28:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-27 23:28:15,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:15,079 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:15,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:28:15,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:15,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash -998314310, now seen corresponding path program 1 times [2024-11-27 23:28:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629949444] [2024-11-27 23:28:15,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629949444] [2024-11-27 23:28:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629949444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:15,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:15,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993564902] [2024-11-27 23:28:15,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:15,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:15,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:15,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:15,269 INFO L87 Difference]: Start difference. First operand 1942 states and 3200 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:18,969 INFO L93 Difference]: Finished difference Result 5124 states and 8707 transitions. [2024-11-27 23:28:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:18,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2024-11-27 23:28:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:18,992 INFO L225 Difference]: With dead ends: 5124 [2024-11-27 23:28:18,992 INFO L226 Difference]: Without dead ends: 3252 [2024-11-27 23:28:19,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:19,004 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 3933 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 4092 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 4092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:19,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3971 Valid, 1625 Invalid, 5088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 4092 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:28:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2024-11-27 23:28:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2974. [2024-11-27 23:28:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2344 states have (on average 1.6267064846416381) internal successors, (3813), 2408 states have internal predecessors, (3813), 497 states have call successors, (497), 122 states have call predecessors, (497), 132 states have return successors, (587), 476 states have call predecessors, (587), 489 states have call successors, (587) [2024-11-27 23:28:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4897 transitions. [2024-11-27 23:28:19,196 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4897 transitions. Word has length 137 [2024-11-27 23:28:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:19,197 INFO L471 AbstractCegarLoop]: Abstraction has 2974 states and 4897 transitions. [2024-11-27 23:28:19,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4897 transitions. [2024-11-27 23:28:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-27 23:28:19,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:19,206 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:19,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:28:19,206 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:19,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2080207923, now seen corresponding path program 1 times [2024-11-27 23:28:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055857740] [2024-11-27 23:28:19,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:19,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055857740] [2024-11-27 23:28:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055857740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:19,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935818800] [2024-11-27 23:28:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:19,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:19,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:19,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:19,479 INFO L87 Difference]: Start difference. First operand 2974 states and 4897 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:23,315 INFO L93 Difference]: Finished difference Result 8779 states and 15068 transitions. [2024-11-27 23:28:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 138 [2024-11-27 23:28:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:23,356 INFO L225 Difference]: With dead ends: 8779 [2024-11-27 23:28:23,356 INFO L226 Difference]: Without dead ends: 5875 [2024-11-27 23:28:23,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:23,375 INFO L435 NwaCegarLoop]: 674 mSDtfsCounter, 3954 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3993 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 5076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:23,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3993 Valid, 1649 Invalid, 5076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:28:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2024-11-27 23:28:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5278. [2024-11-27 23:28:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 4082 states have (on average 1.6068103870651642) internal successors, (6559), 4215 states have internal predecessors, (6559), 958 states have call successors, (958), 202 states have call predecessors, (958), 237 states have return successors, (1216), 940 states have call predecessors, (1216), 946 states have call successors, (1216) [2024-11-27 23:28:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 8733 transitions. [2024-11-27 23:28:23,734 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 8733 transitions. Word has length 138 [2024-11-27 23:28:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:23,734 INFO L471 AbstractCegarLoop]: Abstraction has 5278 states and 8733 transitions. [2024-11-27 23:28:23,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 8733 transitions. [2024-11-27 23:28:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 23:28:23,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:23,741 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:23,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:28:23,742 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:23,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1718967883, now seen corresponding path program 1 times [2024-11-27 23:28:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839904581] [2024-11-27 23:28:23,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839904581] [2024-11-27 23:28:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839904581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:23,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:23,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273860018] [2024-11-27 23:28:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:23,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:23,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:23,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:23,932 INFO L87 Difference]: Start difference. First operand 5278 states and 8733 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:28,622 INFO L93 Difference]: Finished difference Result 17301 states and 30336 transitions. [2024-11-27 23:28:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 139 [2024-11-27 23:28:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:28,723 INFO L225 Difference]: With dead ends: 17301 [2024-11-27 23:28:28,723 INFO L226 Difference]: Without dead ends: 12093 [2024-11-27 23:28:28,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:28,772 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 3991 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4031 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 5095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:28,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4031 Valid, 1679 Invalid, 5095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1032 Valid, 4063 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:28:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12093 states. [2024-11-27 23:28:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12093 to 10624. [2024-11-27 23:28:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10624 states, 8019 states have (on average 1.584486843746103) internal successors, (12706), 8328 states have internal predecessors, (12706), 2121 states have call successors, (2121), 362 states have call predecessors, (2121), 483 states have return successors, (2939), 2132 states have call predecessors, (2939), 2101 states have call successors, (2939) [2024-11-27 23:28:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 17766 transitions. [2024-11-27 23:28:29,858 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 17766 transitions. Word has length 139 [2024-11-27 23:28:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:29,858 INFO L471 AbstractCegarLoop]: Abstraction has 10624 states and 17766 transitions. [2024-11-27 23:28:29,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 17766 transitions. [2024-11-27 23:28:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:28:29,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:29,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:29,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:28:29,865 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:29,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash 316549198, now seen corresponding path program 1 times [2024-11-27 23:28:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959110686] [2024-11-27 23:28:29,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:30,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959110686] [2024-11-27 23:28:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959110686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967170160] [2024-11-27 23:28:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:30,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:30,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:30,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:30,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:30,056 INFO L87 Difference]: Start difference. First operand 10624 states and 17766 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:35,636 INFO L93 Difference]: Finished difference Result 38103 states and 68875 transitions. [2024-11-27 23:28:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 140 [2024-11-27 23:28:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:35,821 INFO L225 Difference]: With dead ends: 38103 [2024-11-27 23:28:35,821 INFO L226 Difference]: Without dead ends: 27549 [2024-11-27 23:28:35,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:35,939 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 4033 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 4071 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 4071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:35,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 1695 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 4071 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:28:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27549 states. [2024-11-27 23:28:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27549 to 23626. [2024-11-27 23:28:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23626 states, 17360 states have (on average 1.5606566820276497) internal successors, (27093), 18133 states have internal predecessors, (27093), 5172 states have call successors, (5172), 682 states have call predecessors, (5172), 1093 states have return successors, (7856), 5316 states have call predecessors, (7856), 5136 states have call successors, (7856) [2024-11-27 23:28:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23626 states to 23626 states and 40121 transitions. [2024-11-27 23:28:38,274 INFO L78 Accepts]: Start accepts. Automaton has 23626 states and 40121 transitions. Word has length 140 [2024-11-27 23:28:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:38,274 INFO L471 AbstractCegarLoop]: Abstraction has 23626 states and 40121 transitions. [2024-11-27 23:28:38,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 23626 states and 40121 transitions. [2024-11-27 23:28:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:28:38,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:38,280 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:38,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:28:38,282 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:38,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1456047952, now seen corresponding path program 1 times [2024-11-27 23:28:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:38,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310280986] [2024-11-27 23:28:38,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310280986] [2024-11-27 23:28:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310280986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:38,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81217566] [2024-11-27 23:28:38,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:38,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:38,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:38,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:38,652 INFO L87 Difference]: Start difference. First operand 23626 states and 40121 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:48,077 INFO L93 Difference]: Finished difference Result 91497 states and 171344 transitions. [2024-11-27 23:28:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:28:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 141 [2024-11-27 23:28:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:48,693 INFO L225 Difference]: With dead ends: 91497 [2024-11-27 23:28:48,693 INFO L226 Difference]: Without dead ends: 67941 [2024-11-27 23:28:48,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:48,981 INFO L435 NwaCegarLoop]: 692 mSDtfsCounter, 4080 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 1071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 5147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1071 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:48,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 1698 Invalid, 5147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1071 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:28:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67941 states. [2024-11-27 23:28:55,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67941 to 56892. [2024-11-27 23:28:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56892 states, 40729 states have (on average 1.5370865967737974) internal successors, (62604), 42762 states have internal predecessors, (62604), 13463 states have call successors, (13463), 1322 states have call predecessors, (13463), 2699 states have return successors, (22327), 14116 states have call predecessors, (22327), 13395 states have call successors, (22327) [2024-11-27 23:28:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56892 states to 56892 states and 98394 transitions. [2024-11-27 23:28:56,763 INFO L78 Accepts]: Start accepts. Automaton has 56892 states and 98394 transitions. Word has length 141 [2024-11-27 23:28:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:56,763 INFO L471 AbstractCegarLoop]: Abstraction has 56892 states and 98394 transitions. [2024-11-27 23:28:56,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 23:28:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 56892 states and 98394 transitions. [2024-11-27 23:28:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:28:56,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:56,770 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:56,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:28:56,771 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:56,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 82292078, now seen corresponding path program 1 times [2024-11-27 23:28:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843481964] [2024-11-27 23:28:56,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:28:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843481964] [2024-11-27 23:28:57,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843481964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:57,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:57,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:28:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448435093] [2024-11-27 23:28:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:57,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:28:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:57,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:28:57,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:28:57,103 INFO L87 Difference]: Start difference. First operand 56892 states and 98394 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)