./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:47:23,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:47:24,004 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:47:24,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:47:24,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:47:24,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:47:24,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:47:24,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:47:24,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:47:24,042 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:47:24,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:47:24,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:47:24,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:47:24,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:47:24,044 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:47:24,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:47:24,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:47:24,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:47:24,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:47:24,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:47:24,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:47:24,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:47:24,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:47:24,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:47:24,060 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:47:24,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:47:24,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:47:24,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:47:24,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:47:24,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:47:24,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:47:24,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:47:24,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:47:24,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:47:24,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:47:24,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:47:24,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:47:24,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:47:24,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:47:24,065 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:47:24,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:47:24,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:47:24,065 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2023-11-29 05:47:24,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:47:24,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:47:24,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:47:24,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:47:24,303 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:47:24,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2023-11-29 05:47:27,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:47:27,353 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:47:27,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2023-11-29 05:47:27,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/data/48128acd0/cda8da06c60841cab2ba0cd4e1e7cb74/FLAGd8a9f71ab [2023-11-29 05:47:27,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/data/48128acd0/cda8da06c60841cab2ba0cd4e1e7cb74 [2023-11-29 05:47:27,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:47:27,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:47:27,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:47:27,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:47:27,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:47:27,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:27" (1/1) ... [2023-11-29 05:47:27,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf865e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:27, skipping insertion in model container [2023-11-29 05:47:27,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:47:27" (1/1) ... [2023-11-29 05:47:27,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:47:27,882 WARN L240 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_e3ba3bb0-aeed-4469-972e-59ab32421dc2/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2023-11-29 05:47:27,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:47:27,934 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:47:27,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-29 05:47:27,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2023-11-29 05:47:27,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [434] [2023-11-29 05:47:27,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2095] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2449] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2458] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2549] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3210] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3299] [2023-11-29 05:47:27,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3417] [2023-11-29 05:47:28,029 WARN L240 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_e3ba3bb0-aeed-4469-972e-59ab32421dc2/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2023-11-29 05:47:28,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:47:28,084 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:47:28,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28 WrapperNode [2023-11-29 05:47:28,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:47:28,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:47:28,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:47:28,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:47:28,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,178 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 893 [2023-11-29 05:47:28,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:47:28,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:47:28,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:47:28,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:47:28,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,230 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]. [2023-11-29 05:47:28,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:47:28,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:47:28,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:47:28,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:47:28,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (1/1) ... [2023-11-29 05:47:28,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:47:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:28,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:47:28,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:47:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-29 05:47:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-29 05:47:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:47:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 05:47:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 05:47:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-29 05:47:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-29 05:47:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 05:47:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 05:47:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-29 05:47:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-29 05:47:28,407 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 05:47:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 05:47:28,408 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-29 05:47:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-29 05:47:28,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 05:47:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 05:47:28,408 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-29 05:47:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-29 05:47:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 05:47:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 05:47:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 05:47:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 05:47:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 05:47:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 05:47:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 05:47:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 05:47:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 05:47:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 05:47:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 05:47:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 05:47:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 05:47:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 05:47:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 05:47:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:47:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 05:47:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-29 05:47:28,414 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 05:47:28,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 05:47:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 05:47:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 05:47:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 05:47:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 05:47:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-29 05:47:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-29 05:47:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:47:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:47:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 05:47:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 05:47:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-29 05:47:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-29 05:47:28,602 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:47:28,605 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:47:29,650 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:47:29,735 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:47:29,735 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 05:47:29,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:47:29 BoogieIcfgContainer [2023-11-29 05:47:29,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:47:29,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:47:29,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:47:29,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:47:29,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:47:27" (1/3) ... [2023-11-29 05:47:29,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1a326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:47:29, skipping insertion in model container [2023-11-29 05:47:29,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:47:28" (2/3) ... [2023-11-29 05:47:29,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1a326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:47:29, skipping insertion in model container [2023-11-29 05:47:29,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:47:29" (3/3) ... [2023-11-29 05:47:29,745 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2023-11-29 05:47:29,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:47:29,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:47:29,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:47:29,839 INFO L357 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, mHoare=true, 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;@7a6545a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:47:29,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:47:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-29 05:47:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 05:47:29,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:29,871 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:29,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:29,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1784768629, now seen corresponding path program 1 times [2023-11-29 05:47:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221720280] [2023-11-29 05:47:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:29,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:47:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:47:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:47:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:47:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:47:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:47:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:47:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:47:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221720280] [2023-11-29 05:47:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221720280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712114389] [2023-11-29 05:47:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:31,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:31,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:31,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:47:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:31,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:31,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:47:31,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:31,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712114389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:31,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:31,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 05:47:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963500060] [2023-11-29 05:47:31,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:47:31,754 INFO L87 Difference]: Start difference. First operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-29 05:47:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:31,984 INFO L93 Difference]: Finished difference Result 1213 states and 2042 transitions. [2023-11-29 05:47:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 84 [2023-11-29 05:47:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:32,008 INFO L225 Difference]: With dead ends: 1213 [2023-11-29 05:47:32,009 INFO L226 Difference]: Without dead ends: 607 [2023-11-29 05:47:32,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:32,022 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 26 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:32,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2889 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-29 05:47:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2023-11-29 05:47:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 468 states have (on average 1.6837606837606838) internal successors, (788), 486 states have internal predecessors, (788), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-29 05:47:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1005 transitions. [2023-11-29 05:47:32,124 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1005 transitions. Word has length 84 [2023-11-29 05:47:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:32,125 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 1005 transitions. [2023-11-29 05:47:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-29 05:47:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1005 transitions. [2023-11-29 05:47:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 05:47:32,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:32,132 INFO L195 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] [2023-11-29 05:47:32,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:32,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:47:32,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:32,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1110920812, now seen corresponding path program 1 times [2023-11-29 05:47:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285443191] [2023-11-29 05:47:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:47:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 05:47:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:47:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:47:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:47:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:47:32,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285443191] [2023-11-29 05:47:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285443191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704313798] [2023-11-29 05:47:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:32,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:32,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:32,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:47:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:33,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:47:33,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:47:33,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704313798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 05:47:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792598907] [2023-11-29 05:47:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:33,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:47:33,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:47:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:47:33,209 INFO L87 Difference]: Start difference. First operand 607 states and 1005 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 05:47:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:33,450 INFO L93 Difference]: Finished difference Result 1224 states and 2028 transitions. [2023-11-29 05:47:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 74 [2023-11-29 05:47:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:33,458 INFO L225 Difference]: With dead ends: 1224 [2023-11-29 05:47:33,459 INFO L226 Difference]: Without dead ends: 622 [2023-11-29 05:47:33,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:47:33,464 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 114 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:33,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5667 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-29 05:47:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 619. [2023-11-29 05:47:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-11-29 05:47:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-11-29 05:47:33,511 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 74 [2023-11-29 05:47:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-11-29 05:47:33,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-11-29 05:47:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-11-29 05:47:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 05:47:33,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:33,516 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:33,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:47:33,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:33,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:33,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1160837612, now seen corresponding path program 1 times [2023-11-29 05:47:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979590226] [2023-11-29 05:47:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:47:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:47:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:47:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:47:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:47:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:47:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:47:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979590226] [2023-11-29 05:47:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979590226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:34,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964629502] [2023-11-29 05:47:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:34,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:34,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:47:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:34,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:47:34,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:34,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964629502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-29 05:47:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883670697] [2023-11-29 05:47:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:34,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:47:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:47:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:47:34,980 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (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) [2023-11-29 05:47:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:35,199 INFO L93 Difference]: Finished difference Result 1242 states and 2059 transitions. [2023-11-29 05:47:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:35,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (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 87 [2023-11-29 05:47:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:35,206 INFO L225 Difference]: With dead ends: 1242 [2023-11-29 05:47:35,206 INFO L226 Difference]: Without dead ends: 630 [2023-11-29 05:47:35,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:47:35,212 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 125 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:35,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5655 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-29 05:47:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 619. [2023-11-29 05:47:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-11-29 05:47:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-11-29 05:47:35,270 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 87 [2023-11-29 05:47:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:35,271 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-11-29 05:47:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (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) [2023-11-29 05:47:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-11-29 05:47:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 05:47:35,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:35,274 INFO L195 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] [2023-11-29 05:47:35,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:47:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:35,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:35,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1406522373, now seen corresponding path program 1 times [2023-11-29 05:47:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:35,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507914557] [2023-11-29 05:47:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 05:47:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:47:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:47:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:47:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:47:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:47:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:47:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507914557] [2023-11-29 05:47:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507914557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592663751] [2023-11-29 05:47:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:35,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:35,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:35,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:35,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:47:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:36,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:47:36,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592663751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:36,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-29 05:47:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404373870] [2023-11-29 05:47:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:47:36,050 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 05:47:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:36,182 INFO L93 Difference]: Finished difference Result 1246 states and 2063 transitions. [2023-11-29 05:47:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:36,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2023-11-29 05:47:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:36,189 INFO L225 Difference]: With dead ends: 1246 [2023-11-29 05:47:36,189 INFO L226 Difference]: Without dead ends: 630 [2023-11-29 05:47:36,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:47:36,194 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:36,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2872 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-29 05:47:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 628. [2023-11-29 05:47:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-11-29 05:47:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-11-29 05:47:36,245 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 75 [2023-11-29 05:47:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:36,245 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-11-29 05:47:36,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 05:47:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-11-29 05:47:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:47:36,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:36,249 INFO L195 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] [2023-11-29 05:47:36,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:47:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:36,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:36,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1670932456, now seen corresponding path program 1 times [2023-11-29 05:47:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225938943] [2023-11-29 05:47:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:47:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:47:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:47:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:47:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:47:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225938943] [2023-11-29 05:47:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225938943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749644853] [2023-11-29 05:47:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:36,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:36,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:36,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:36,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:47:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:47:37,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:47:37,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749644853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:37,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-29 05:47:37,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771133578] [2023-11-29 05:47:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:47:37,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:37,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:47:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:37,230 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 05:47:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:37,445 INFO L93 Difference]: Finished difference Result 1251 states and 2062 transitions. [2023-11-29 05:47:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:37,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 76 [2023-11-29 05:47:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:37,451 INFO L225 Difference]: With dead ends: 1251 [2023-11-29 05:47:37,451 INFO L226 Difference]: Without dead ends: 641 [2023-11-29 05:47:37,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:47:37,454 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 136 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:37,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 5643 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-29 05:47:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 628. [2023-11-29 05:47:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-11-29 05:47:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-11-29 05:47:37,481 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 76 [2023-11-29 05:47:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:37,481 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-11-29 05:47:37,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 05:47:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-11-29 05:47:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 05:47:37,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:37,484 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:37,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:47:37,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:37,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:37,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 519194320, now seen corresponding path program 1 times [2023-11-29 05:47:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72980863] [2023-11-29 05:47:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:47:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:47:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:47:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:47:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:47:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:47:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:47:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72980863] [2023-11-29 05:47:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72980863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15664843] [2023-11-29 05:47:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:38,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:38,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:47:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:38,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:38,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:38,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15664843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179526041] [2023-11-29 05:47:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:38,633 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 05:47:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:38,853 INFO L93 Difference]: Finished difference Result 1290 states and 2142 transitions. [2023-11-29 05:47:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 89 [2023-11-29 05:47:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:38,859 INFO L225 Difference]: With dead ends: 1290 [2023-11-29 05:47:38,860 INFO L226 Difference]: Without dead ends: 680 [2023-11-29 05:47:38,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:38,863 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 165 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:38,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2717 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:47:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-29 05:47:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 672. [2023-11-29 05:47:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-29 05:47:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-29 05:47:38,887 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 89 [2023-11-29 05:47:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:38,887 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-29 05:47:38,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 05:47:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-29 05:47:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:47:38,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:38,890 INFO L195 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] [2023-11-29 05:47:38,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:47:39,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:47:39,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:39,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1216356592, now seen corresponding path program 1 times [2023-11-29 05:47:39,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:39,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005642022] [2023-11-29 05:47:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:39,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:47:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:47:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:47:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:47:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:47:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:47:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005642022] [2023-11-29 05:47:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005642022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099605173] [2023-11-29 05:47:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:39,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:39,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:47:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:39,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:47:39,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:47:39,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099605173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:39,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-29 05:47:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201389467] [2023-11-29 05:47:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:47:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:47:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:47:39,785 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2023-11-29 05:47:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:40,019 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-11-29 05:47:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:47:40,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 78 [2023-11-29 05:47:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:40,025 INFO L225 Difference]: With dead ends: 1349 [2023-11-29 05:47:40,025 INFO L226 Difference]: Without dead ends: 695 [2023-11-29 05:47:40,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:47:40,029 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 131 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6564 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:40,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6564 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:47:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-29 05:47:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-11-29 05:47:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-29 05:47:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-29 05:47:40,053 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 78 [2023-11-29 05:47:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:40,053 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-29 05:47:40,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2023-11-29 05:47:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-29 05:47:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:47:40,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:40,055 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:40,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:40,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:47:40,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:40,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash 681414586, now seen corresponding path program 1 times [2023-11-29 05:47:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:40,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68242580] [2023-11-29 05:47:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:47:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:47:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:47:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:47:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:47:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:47:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68242580] [2023-11-29 05:47:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68242580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655166957] [2023-11-29 05:47:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:40,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:40,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:40,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:47:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:41,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:47:41,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:41,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655166957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:41,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-29 05:47:41,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580829518] [2023-11-29 05:47:41,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:47:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:47:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:47:41,336 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2023-11-29 05:47:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:41,574 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-11-29 05:47:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:47:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 91 [2023-11-29 05:47:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:41,578 INFO L225 Difference]: With dead ends: 1349 [2023-11-29 05:47:41,579 INFO L226 Difference]: Without dead ends: 695 [2023-11-29 05:47:41,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:47:41,612 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 141 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6552 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6552 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:47:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-29 05:47:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-11-29 05:47:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-29 05:47:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-29 05:47:41,637 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 91 [2023-11-29 05:47:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:41,638 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-29 05:47:41,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2023-11-29 05:47:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-29 05:47:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 05:47:41,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:41,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:41,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:47:41,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:41,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:41,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1800032555, now seen corresponding path program 1 times [2023-11-29 05:47:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:41,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348870371] [2023-11-29 05:47:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:47:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:47:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:47:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:47:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:47:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:42,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348870371] [2023-11-29 05:47:42,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348870371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:42,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621728316] [2023-11-29 05:47:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:42,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:42,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:42,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:47:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:47:42,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:47:42,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:42,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621728316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:42,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:42,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-29 05:47:42,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754878050] [2023-11-29 05:47:42,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:42,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:47:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:42,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:47:42,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:47:42,531 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2023-11-29 05:47:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:42,784 INFO L93 Difference]: Finished difference Result 1341 states and 2227 transitions. [2023-11-29 05:47:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:47:42,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 80 [2023-11-29 05:47:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:42,791 INFO L225 Difference]: With dead ends: 1341 [2023-11-29 05:47:42,791 INFO L226 Difference]: Without dead ends: 687 [2023-11-29 05:47:42,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:47:42,796 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 151 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:42,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6540 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:47:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-29 05:47:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 672. [2023-11-29 05:47:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-29 05:47:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-29 05:47:42,833 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 80 [2023-11-29 05:47:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:42,833 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-29 05:47:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2023-11-29 05:47:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-29 05:47:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 05:47:42,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:42,836 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:47:42,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:47:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:43,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:43,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 817387554, now seen corresponding path program 1 times [2023-11-29 05:47:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984971078] [2023-11-29 05:47:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:47:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:47:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:47:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:47:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:47:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:47:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:47:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984971078] [2023-11-29 05:47:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984971078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150481894] [2023-11-29 05:47:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:43,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:43,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:47:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:43,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:43,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:47:43,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150481894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:43,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:43,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 05:47:43,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657795562] [2023-11-29 05:47:43,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:43,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:43,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:47:43,951 INFO L87 Difference]: Start difference. First operand 672 states and 1116 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 05:47:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:44,028 INFO L93 Difference]: Finished difference Result 1315 states and 2189 transitions. [2023-11-29 05:47:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:44,029 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-11-29 05:47:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:44,033 INFO L225 Difference]: With dead ends: 1315 [2023-11-29 05:47:44,033 INFO L226 Difference]: Without dead ends: 672 [2023-11-29 05:47:44,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:44,036 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 35 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:44,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2870 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-29 05:47:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2023-11-29 05:47:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.683712121212121) internal successors, (889), 548 states have internal predecessors, (889), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-29 05:47:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1111 transitions. [2023-11-29 05:47:44,056 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1111 transitions. Word has length 92 [2023-11-29 05:47:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:44,056 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1111 transitions. [2023-11-29 05:47:44,057 INFO L496 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 05:47:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1111 transitions. [2023-11-29 05:47:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 05:47:44,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:44,058 INFO L195 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] [2023-11-29 05:47:44,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:44,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:47:44,259 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:44,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2108691594, now seen corresponding path program 1 times [2023-11-29 05:47:44,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:44,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629789782] [2023-11-29 05:47:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:44,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:47:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:47:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:47:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:47:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:47:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629789782] [2023-11-29 05:47:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629789782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589158092] [2023-11-29 05:47:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:44,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:44,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:44,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:47:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:44,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:47:44,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:47:44,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589158092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:44,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 05:47:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107292571] [2023-11-29 05:47:44,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:47:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:47:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:44,799 INFO L87 Difference]: Start difference. First operand 672 states and 1111 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 05:47:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:44,945 INFO L93 Difference]: Finished difference Result 1283 states and 2121 transitions. [2023-11-29 05:47:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2023-11-29 05:47:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:44,949 INFO L225 Difference]: With dead ends: 1283 [2023-11-29 05:47:44,949 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 05:47:44,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:44,953 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 114 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:44,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5679 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 05:47:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2023-11-29 05:47:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-29 05:47:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-11-29 05:47:44,982 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 81 [2023-11-29 05:47:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:44,983 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-11-29 05:47:44,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 05:47:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-11-29 05:47:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:47:44,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:44,986 INFO L195 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] [2023-11-29 05:47:44,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:47:45,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:45,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:45,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 246843287, now seen corresponding path program 1 times [2023-11-29 05:47:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314266111] [2023-11-29 05:47:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:47:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:47:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:47:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 05:47:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:45,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314266111] [2023-11-29 05:47:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314266111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:45,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830022782] [2023-11-29 05:47:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:45,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:45,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:45,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:47:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:45,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:47:45,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:47:45,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830022782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:45,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 05:47:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698041335] [2023-11-29 05:47:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:45,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:47:45,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:47:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:45,721 INFO L87 Difference]: Start difference. First operand 684 states and 1131 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 05:47:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:45,864 INFO L93 Difference]: Finished difference Result 1291 states and 2135 transitions. [2023-11-29 05:47:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:47:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-11-29 05:47:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:45,868 INFO L225 Difference]: With dead ends: 1291 [2023-11-29 05:47:45,868 INFO L226 Difference]: Without dead ends: 704 [2023-11-29 05:47:45,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:45,870 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 125 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:45,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5667 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-11-29 05:47:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 684. [2023-11-29 05:47:45,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-29 05:47:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-11-29 05:47:45,899 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 82 [2023-11-29 05:47:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:45,900 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-11-29 05:47:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 05:47:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-11-29 05:47:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:47:45,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:45,902 INFO L195 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] [2023-11-29 05:47:45,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:47:46,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:46,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 795038351, now seen corresponding path program 1 times [2023-11-29 05:47:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921842987] [2023-11-29 05:47:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 05:47:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:47:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:47:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:47:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:46,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:46,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921842987] [2023-11-29 05:47:46,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921842987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:46,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857607460] [2023-11-29 05:47:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:46,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:46,332 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:46,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:47:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:46,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:47:46,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857607460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:46,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:46,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-29 05:47:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72778892] [2023-11-29 05:47:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:47:46,566 INFO L87 Difference]: Start difference. First operand 684 states and 1131 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, (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) [2023-11-29 05:47:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:46,647 INFO L93 Difference]: Finished difference Result 1335 states and 2217 transitions. [2023-11-29 05:47:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:46,648 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, (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 82 [2023-11-29 05:47:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:46,651 INFO L225 Difference]: With dead ends: 1335 [2023-11-29 05:47:46,651 INFO L226 Difference]: Without dead ends: 684 [2023-11-29 05:47:46,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:47:46,654 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 10 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:46,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2872 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-29 05:47:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-11-29 05:47:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.675977653631285) internal successors, (900), 559 states have internal predecessors, (900), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-29 05:47:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1128 transitions. [2023-11-29 05:47:46,681 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1128 transitions. Word has length 82 [2023-11-29 05:47:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:46,682 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1128 transitions. [2023-11-29 05:47:46,682 INFO L496 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, (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) [2023-11-29 05:47:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1128 transitions. [2023-11-29 05:47:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 05:47:46,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:46,684 INFO L195 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] [2023-11-29 05:47:46,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:47:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:47:46,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:46,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2019705074, now seen corresponding path program 1 times [2023-11-29 05:47:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006537340] [2023-11-29 05:47:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:47:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:47:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:47:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:47:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 05:47:47,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006537340] [2023-11-29 05:47:47,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006537340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863048835] [2023-11-29 05:47:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:47,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:47:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:47:47,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:47:47,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:47,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863048835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:47,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:47,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 05:47:47,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197133473] [2023-11-29 05:47:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:47,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:47,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:47,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:47:47,352 INFO L87 Difference]: Start difference. First operand 684 states and 1128 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 05:47:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:47,526 INFO L93 Difference]: Finished difference Result 1331 states and 2212 transitions. [2023-11-29 05:47:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 83 [2023-11-29 05:47:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:47,532 INFO L225 Difference]: With dead ends: 1331 [2023-11-29 05:47:47,533 INFO L226 Difference]: Without dead ends: 744 [2023-11-29 05:47:47,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:47,536 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 235 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:47,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2697 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-11-29 05:47:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 728. [2023-11-29 05:47:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-29 05:47:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-29 05:47:47,555 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 83 [2023-11-29 05:47:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:47,556 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-29 05:47:47,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 05:47:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-29 05:47:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 05:47:47,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:47,559 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:47,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:47:47,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:47:47,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:47,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1908194401, now seen corresponding path program 1 times [2023-11-29 05:47:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:47,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255100336] [2023-11-29 05:47:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:47:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:47:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:47:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:47:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:47:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255100336] [2023-11-29 05:47:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255100336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797860946] [2023-11-29 05:47:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:48,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:48,219 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:48,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:47:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:48,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:47:48,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:47:48,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797860946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:48,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-29 05:47:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876298440] [2023-11-29 05:47:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:48,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:47:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:47:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:48,515 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2023-11-29 05:47:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:48,733 INFO L93 Difference]: Finished difference Result 1345 states and 2226 transitions. [2023-11-29 05:47:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:47:48,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 95 [2023-11-29 05:47:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:48,739 INFO L225 Difference]: With dead ends: 1345 [2023-11-29 05:47:48,739 INFO L226 Difference]: Without dead ends: 758 [2023-11-29 05:47:48,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:47:48,742 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 132 mSDsluCounter, 5599 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6547 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:48,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6547 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:47:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-11-29 05:47:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 728. [2023-11-29 05:47:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-29 05:47:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-29 05:47:48,763 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 95 [2023-11-29 05:47:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:48,763 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-29 05:47:48,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2023-11-29 05:47:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-29 05:47:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 05:47:48,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:48,766 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:47:48,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:48,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:47:48,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:48,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1453236034, now seen corresponding path program 1 times [2023-11-29 05:47:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151935977] [2023-11-29 05:47:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:47:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:47:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:47:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:47:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:47:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:47:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151935977] [2023-11-29 05:47:49,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151935977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234343508] [2023-11-29 05:47:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:49,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:49,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:49,462 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:49,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:47:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:49,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:47:49,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:47:49,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:49,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234343508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:49,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-29 05:47:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692091650] [2023-11-29 05:47:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:47:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:47:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:49,760 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-11-29 05:47:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:49,952 INFO L93 Difference]: Finished difference Result 1337 states and 2213 transitions. [2023-11-29 05:47:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:47:49,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 96 [2023-11-29 05:47:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:49,958 INFO L225 Difference]: With dead ends: 1337 [2023-11-29 05:47:49,958 INFO L226 Difference]: Without dead ends: 750 [2023-11-29 05:47:49,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:47:49,962 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 142 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6535 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:49,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6535 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-29 05:47:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 728. [2023-11-29 05:47:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-29 05:47:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-29 05:47:49,989 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 96 [2023-11-29 05:47:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-29 05:47:49,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-11-29 05:47:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-29 05:47:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 05:47:49,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:49,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:50,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:47:50,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:47:50,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:50,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash 641277355, now seen corresponding path program 1 times [2023-11-29 05:47:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225635931] [2023-11-29 05:47:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:47:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:47:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:47:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:47:50,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:50,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225635931] [2023-11-29 05:47:50,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225635931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:50,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668682467] [2023-11-29 05:47:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:50,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:50,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:47:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:50,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:47:50,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:47:50,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668682467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:50,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 05:47:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425154074] [2023-11-29 05:47:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:50,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:47:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:47:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:47:50,787 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-11-29 05:47:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:50,973 INFO L93 Difference]: Finished difference Result 1892 states and 3154 transitions. [2023-11-29 05:47:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:47:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 85 [2023-11-29 05:47:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:50,984 INFO L225 Difference]: With dead ends: 1892 [2023-11-29 05:47:50,984 INFO L226 Difference]: Without dead ends: 1309 [2023-11-29 05:47:50,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:47:50,988 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 924 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:50,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1956 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-29 05:47:51,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1244. [2023-11-29 05:47:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 992 states have (on average 1.6945564516129032) internal successors, (1681), 1023 states have internal predecessors, (1681), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2023-11-29 05:47:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 2076 transitions. [2023-11-29 05:47:51,046 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 2076 transitions. Word has length 85 [2023-11-29 05:47:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:51,047 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 2076 transitions. [2023-11-29 05:47:51,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-11-29 05:47:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 2076 transitions. [2023-11-29 05:47:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 05:47:51,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:51,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:51,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:47:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:47:51,254 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -936541888, now seen corresponding path program 1 times [2023-11-29 05:47:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037792927] [2023-11-29 05:47:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:47:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:47:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:47:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:47:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:47:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:47:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 05:47:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 05:47:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 05:47:51,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037792927] [2023-11-29 05:47:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037792927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637792068] [2023-11-29 05:47:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:51,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:51,720 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:51,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:47:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:47:52,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:47:52,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637792068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:52,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:52,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 05:47:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865903700] [2023-11-29 05:47:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:47:52,138 INFO L87 Difference]: Start difference. First operand 1244 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:47:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:52,310 INFO L93 Difference]: Finished difference Result 3160 states and 5259 transitions. [2023-11-29 05:47:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-11-29 05:47:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:52,326 INFO L225 Difference]: With dead ends: 3160 [2023-11-29 05:47:52,326 INFO L226 Difference]: Without dead ends: 2061 [2023-11-29 05:47:52,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:52,333 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 997 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:52,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 3303 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:47:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-11-29 05:47:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2053. [2023-11-29 05:47:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1628 states have (on average 1.6683046683046683) internal successors, (2716), 1662 states have internal predecessors, (2716), 327 states have call successors, (327), 94 states have call predecessors, (327), 97 states have return successors, (359), 312 states have call predecessors, (359), 321 states have call successors, (359) [2023-11-29 05:47:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3402 transitions. [2023-11-29 05:47:52,424 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3402 transitions. Word has length 135 [2023-11-29 05:47:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:52,424 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 3402 transitions. [2023-11-29 05:47:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:47:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3402 transitions. [2023-11-29 05:47:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 05:47:52,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:52,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:52,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:47:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:47:52,633 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:52,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1380260946, now seen corresponding path program 1 times [2023-11-29 05:47:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352859693] [2023-11-29 05:47:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:47:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:47:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:47:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:47:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:47:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 05:47:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:47:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 05:47:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352859693] [2023-11-29 05:47:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352859693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448798934] [2023-11-29 05:47:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:53,255 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:47:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:53,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:53,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:47:53,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:53,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448798934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:53,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:53,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-29 05:47:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783270525] [2023-11-29 05:47:53,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:53,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:53,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:53,621 INFO L87 Difference]: Start difference. First operand 2053 states and 3402 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:54,135 INFO L93 Difference]: Finished difference Result 3993 states and 6749 transitions. [2023-11-29 05:47:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:47:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2023-11-29 05:47:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:54,150 INFO L225 Difference]: With dead ends: 3993 [2023-11-29 05:47:54,151 INFO L226 Difference]: Without dead ends: 2085 [2023-11-29 05:47:54,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:54,164 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:47:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2023-11-29 05:47:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2085. [2023-11-29 05:47:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1656 states have (on average 1.6690821256038648) internal successors, (2764), 1690 states have internal predecessors, (2764), 327 states have call successors, (327), 98 states have call predecessors, (327), 101 states have return successors, (363), 312 states have call predecessors, (363), 321 states have call successors, (363) [2023-11-29 05:47:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3454 transitions. [2023-11-29 05:47:54,288 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3454 transitions. Word has length 136 [2023-11-29 05:47:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:54,288 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3454 transitions. [2023-11-29 05:47:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3454 transitions. [2023-11-29 05:47:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 05:47:54,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:54,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:54,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:47:54,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:54,497 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:54,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1009203572, now seen corresponding path program 1 times [2023-11-29 05:47:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209161326] [2023-11-29 05:47:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:54,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:47:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:47:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:47:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:47:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:47:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:47:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209161326] [2023-11-29 05:47:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209161326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:54,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774843574] [2023-11-29 05:47:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:54,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:54,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:54,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:54,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:47:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:55,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:55,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:47:55,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:55,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774843574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:55,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:55,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-29 05:47:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113902565] [2023-11-29 05:47:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:55,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:55,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:55,294 INFO L87 Difference]: Start difference. First operand 2085 states and 3454 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:55,835 INFO L93 Difference]: Finished difference Result 4057 states and 6841 transitions. [2023-11-29 05:47:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:47:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 138 [2023-11-29 05:47:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:55,847 INFO L225 Difference]: With dead ends: 4057 [2023-11-29 05:47:55,847 INFO L226 Difference]: Without dead ends: 2117 [2023-11-29 05:47:55,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:55,859 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:47:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-11-29 05:47:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2023-11-29 05:47:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1684 states have (on average 1.669833729216152) internal successors, (2812), 1718 states have internal predecessors, (2812), 327 states have call successors, (327), 102 states have call predecessors, (327), 105 states have return successors, (367), 312 states have call predecessors, (367), 321 states have call successors, (367) [2023-11-29 05:47:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3506 transitions. [2023-11-29 05:47:55,953 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3506 transitions. Word has length 138 [2023-11-29 05:47:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:55,953 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 3506 transitions. [2023-11-29 05:47:55,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3506 transitions. [2023-11-29 05:47:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 05:47:55,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:55,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:55,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:47:56,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:56,162 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -23614468, now seen corresponding path program 1 times [2023-11-29 05:47:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:56,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365345032] [2023-11-29 05:47:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:47:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:47:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:47:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:47:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:47:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:47:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 05:47:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:47:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:47:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:47:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:47:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:47:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-29 05:47:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-29 05:47:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-29 05:47:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 05:47:56,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365345032] [2023-11-29 05:47:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365345032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343191248] [2023-11-29 05:47:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:56,968 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:56,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:47:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:57,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:57,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-29 05:47:57,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343191248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-11-29 05:47:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589105754] [2023-11-29 05:47:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:57,399 INFO L87 Difference]: Start difference. First operand 2117 states and 3506 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:47:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:57,907 INFO L93 Difference]: Finished difference Result 4121 states and 6933 transitions. [2023-11-29 05:47:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:47:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 207 [2023-11-29 05:47:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:57,918 INFO L225 Difference]: With dead ends: 4121 [2023-11-29 05:47:57,919 INFO L226 Difference]: Without dead ends: 2149 [2023-11-29 05:47:57,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:47:57,924 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 930 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:57,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2423 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:47:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-11-29 05:47:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-11-29 05:47:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1712 states have (on average 1.6705607476635513) internal successors, (2860), 1746 states have internal predecessors, (2860), 327 states have call successors, (327), 106 states have call predecessors, (327), 109 states have return successors, (371), 312 states have call predecessors, (371), 321 states have call successors, (371) [2023-11-29 05:47:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3558 transitions. [2023-11-29 05:47:57,991 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3558 transitions. Word has length 207 [2023-11-29 05:47:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:57,991 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3558 transitions. [2023-11-29 05:47:57,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:47:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3558 transitions. [2023-11-29 05:47:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:47:57,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:57,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:58,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:47:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:47:58,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:58,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash -262288660, now seen corresponding path program 1 times [2023-11-29 05:47:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713016541] [2023-11-29 05:47:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:47:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:47:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:47:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:47:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 05:47:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:47:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:47:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 05:47:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:47:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:47:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:47:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:47:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:47:58,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713016541] [2023-11-29 05:47:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713016541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901228256] [2023-11-29 05:47:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:58,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:58,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:58,692 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:58,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:47:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:58,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:47:58,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:47:59,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:47:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901228256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:47:59,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:59,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-29 05:47:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296403594] [2023-11-29 05:47:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:59,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:47:59,055 INFO L87 Difference]: Start difference. First operand 2149 states and 3558 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:59,542 INFO L93 Difference]: Finished difference Result 4185 states and 7025 transitions. [2023-11-29 05:47:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:47:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2023-11-29 05:47:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:59,556 INFO L225 Difference]: With dead ends: 4185 [2023-11-29 05:47:59,557 INFO L226 Difference]: Without dead ends: 2181 [2023-11-29 05:47:59,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:59,563 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 927 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:59,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2423 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:47:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-11-29 05:47:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2023-11-29 05:47:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1740 states have (on average 1.671264367816092) internal successors, (2908), 1774 states have internal predecessors, (2908), 327 states have call successors, (327), 110 states have call predecessors, (327), 113 states have return successors, (375), 312 states have call predecessors, (375), 321 states have call successors, (375) [2023-11-29 05:47:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3610 transitions. [2023-11-29 05:47:59,628 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3610 transitions. Word has length 142 [2023-11-29 05:47:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:59,628 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3610 transitions. [2023-11-29 05:47:59,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:47:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3610 transitions. [2023-11-29 05:47:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:47:59,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:59,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:47:59,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:47:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:47:59,833 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2112648366, now seen corresponding path program 1 times [2023-11-29 05:47:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496250970] [2023-11-29 05:47:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:47:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:48:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:48:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:48:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:48:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 05:48:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 05:48:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:48:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 05:48:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496250970] [2023-11-29 05:48:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496250970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:00,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898829613] [2023-11-29 05:48:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:00,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:00,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:00,430 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:48:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:00,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:48:00,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:48:00,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898829613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:00,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:48:00,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-29 05:48:00,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596883991] [2023-11-29 05:48:00,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:00,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:48:00,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:48:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:48:00,712 INFO L87 Difference]: Start difference. First operand 2181 states and 3610 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:00,830 INFO L93 Difference]: Finished difference Result 4344 states and 7205 transitions. [2023-11-29 05:48:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:48:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-11-29 05:48:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:00,843 INFO L225 Difference]: With dead ends: 4344 [2023-11-29 05:48:00,843 INFO L226 Difference]: Without dead ends: 2147 [2023-11-29 05:48:00,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:48:00,849 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 13 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2871 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:48:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2023-11-29 05:48:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2147. [2023-11-29 05:48:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1709 states have (on average 1.6617905207723815) internal successors, (2840), 1741 states have internal predecessors, (2840), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-11-29 05:48:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3538 transitions. [2023-11-29 05:48:00,904 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3538 transitions. Word has length 144 [2023-11-29 05:48:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:00,905 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3538 transitions. [2023-11-29 05:48:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3538 transitions. [2023-11-29 05:48:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 05:48:00,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:48:00,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:00,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:48:01,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:01,110 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:48:01,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash -221744465, now seen corresponding path program 1 times [2023-11-29 05:48:01,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:01,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304083793] [2023-11-29 05:48:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:01,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:48:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:48:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:48:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 05:48:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:48:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 05:48:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 05:48:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304083793] [2023-11-29 05:48:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304083793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199949249] [2023-11-29 05:48:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:01,725 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:01,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:48:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:01,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:48:01,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:48:02,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199949249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:02,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:48:02,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-11-29 05:48:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990118337] [2023-11-29 05:48:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:48:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:48:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:48:02,028 INFO L87 Difference]: Start difference. First operand 2147 states and 3538 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 05:48:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:02,206 INFO L93 Difference]: Finished difference Result 4316 states and 7110 transitions. [2023-11-29 05:48:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:48:02,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2023-11-29 05:48:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:02,216 INFO L225 Difference]: With dead ends: 4316 [2023-11-29 05:48:02,216 INFO L226 Difference]: Without dead ends: 2182 [2023-11-29 05:48:02,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:48:02,221 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 134 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:02,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5654 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:48:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2023-11-29 05:48:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2140. [2023-11-29 05:48:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1702 states have (on average 1.6592244418331374) internal successors, (2824), 1734 states have internal predecessors, (2824), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-11-29 05:48:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3522 transitions. [2023-11-29 05:48:02,293 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3522 transitions. Word has length 145 [2023-11-29 05:48:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:02,293 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3522 transitions. [2023-11-29 05:48:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 05:48:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3522 transitions. [2023-11-29 05:48:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:48:02,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:48:02,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:02,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:48:02,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:02,499 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:48:02,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 556571124, now seen corresponding path program 1 times [2023-11-29 05:48:02,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:02,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536032035] [2023-11-29 05:48:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:02,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:48:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:48:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:48:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:48:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:48:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:48:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 05:48:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:48:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536032035] [2023-11-29 05:48:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536032035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:48:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877400199] [2023-11-29 05:48:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:48:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:48:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:48:03,075 INFO L87 Difference]: Start difference. First operand 2140 states and 3522 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:09,315 INFO L93 Difference]: Finished difference Result 4948 states and 8228 transitions. [2023-11-29 05:48:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:48:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-11-29 05:48:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:09,328 INFO L225 Difference]: With dead ends: 4948 [2023-11-29 05:48:09,328 INFO L226 Difference]: Without dead ends: 2904 [2023-11-29 05:48:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:48:09,333 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1165 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:09,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1547 Invalid, 3467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [241 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 05:48:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2023-11-29 05:48:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2188. [2023-11-29 05:48:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1741 states have (on average 1.6547960941987363) internal successors, (2881), 1773 states have internal predecessors, (2881), 332 states have call successors, (332), 110 states have call predecessors, (332), 114 states have return successors, (384), 318 states have call predecessors, (384), 326 states have call successors, (384) [2023-11-29 05:48:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3597 transitions. [2023-11-29 05:48:09,914 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3597 transitions. Word has length 146 [2023-11-29 05:48:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:09,914 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3597 transitions. [2023-11-29 05:48:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3597 transitions. [2023-11-29 05:48:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:48:09,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:48:09,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:09,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:48:09,922 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:48:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1894389726, now seen corresponding path program 1 times [2023-11-29 05:48:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090253443] [2023-11-29 05:48:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:48:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:48:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:48:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:48:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:48:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:48:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:48:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 05:48:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 05:48:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090253443] [2023-11-29 05:48:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090253443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:10,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:48:10,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400017252] [2023-11-29 05:48:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:10,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:48:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:48:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:48:10,424 INFO L87 Difference]: Start difference. First operand 2188 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:17,058 INFO L93 Difference]: Finished difference Result 5005 states and 8307 transitions. [2023-11-29 05:48:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:48:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-11-29 05:48:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:17,069 INFO L225 Difference]: With dead ends: 5005 [2023-11-29 05:48:17,069 INFO L226 Difference]: Without dead ends: 2822 [2023-11-29 05:48:17,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:48:17,074 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1091 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 3512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1544 Invalid, 3512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 05:48:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2023-11-29 05:48:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2161. [2023-11-29 05:48:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1717 states have (on average 1.6517181129877694) internal successors, (2836), 1747 states have internal predecessors, (2836), 331 states have call successors, (331), 110 states have call predecessors, (331), 112 states have return successors, (381), 317 states have call predecessors, (381), 325 states have call successors, (381) [2023-11-29 05:48:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3548 transitions. [2023-11-29 05:48:17,433 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3548 transitions. Word has length 146 [2023-11-29 05:48:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:17,433 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 3548 transitions. [2023-11-29 05:48:17,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 05:48:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3548 transitions. [2023-11-29 05:48:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-29 05:48:17,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:48:17,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:48:17,437 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:48:17,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1257170177, now seen corresponding path program 1 times [2023-11-29 05:48:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342284924] [2023-11-29 05:48:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:48:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:48:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:48:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:48:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:48:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 05:48:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:48:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:48:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:48:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:48:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:48:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-29 05:48:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-29 05:48:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-29 05:48:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 05:48:19,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342284924] [2023-11-29 05:48:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342284924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:48:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410879535] [2023-11-29 05:48:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:19,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:19,490 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:19,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:48:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:19,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:48:19,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 05:48:20,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-29 05:48:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410879535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:20,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:48:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6] total 30 [2023-11-29 05:48:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769147553] [2023-11-29 05:48:20,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:20,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 05:48:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 05:48:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:48:20,403 INFO L87 Difference]: Start difference. First operand 2161 states and 3548 transitions. Second operand has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-29 05:50:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:40,580 INFO L93 Difference]: Finished difference Result 36752 states and 69475 transitions. [2023-11-29 05:50:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2023-11-29 05:50:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) Word has length 218 [2023-11-29 05:50:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:40,747 INFO L225 Difference]: With dead ends: 36752 [2023-11-29 05:50:40,747 INFO L226 Difference]: Without dead ends: 34184 [2023-11-29 05:50:40,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 641 SyntacticMatches, 5 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63209 ImplicationChecksByTransitivity, 75.5s TimeCoverageRelationStatistics Valid=17077, Invalid=116513, Unknown=0, NotChecked=0, Total=133590 [2023-11-29 05:50:40,819 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 28378 mSDsluCounter, 12611 mSDsCounter, 0 mSdLazyCounter, 40423 mSolverCounterSat, 12390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28390 SdHoareTripleChecker+Valid, 13597 SdHoareTripleChecker+Invalid, 52813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 12390 IncrementalHoareTripleChecker+Valid, 40423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:40,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28390 Valid, 13597 Invalid, 52813 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [12390 Valid, 40423 Invalid, 0 Unknown, 0 Unchecked, 52.6s Time] [2023-11-29 05:50:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34184 states. [2023-11-29 05:50:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34184 to 10909. [2023-11-29 05:50:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 8525 states have (on average 1.5656304985337244) internal successors, (13347), 8706 states have internal predecessors, (13347), 1668 states have call successors, (1668), 657 states have call predecessors, (1668), 715 states have return successors, (2880), 1605 states have call predecessors, (2880), 1648 states have call successors, (2880) [2023-11-29 05:50:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 17895 transitions. [2023-11-29 05:50:44,097 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 17895 transitions. Word has length 218 [2023-11-29 05:50:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:44,098 INFO L495 AbstractCegarLoop]: Abstraction has 10909 states and 17895 transitions. [2023-11-29 05:50:44,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-29 05:50:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 17895 transitions. [2023-11-29 05:50:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 05:50:44,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:44,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:44,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:50:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:50:44,308 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:44,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 818593007, now seen corresponding path program 1 times [2023-11-29 05:50:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:50:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775523329] [2023-11-29 05:50:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:50:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:50:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:50:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:50:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:50:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:50:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:50:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:50:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:50:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:50:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:50:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:50:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:50:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 05:50:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:50:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:50:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775523329] [2023-11-29 05:50:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775523329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:50:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650883669] [2023-11-29 05:50:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:45,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:50:45,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:50:45,210 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:50:45,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:50:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:45,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:50:45,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:50:45,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650883669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:45,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:50:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:50:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465172031] [2023-11-29 05:50:45,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:45,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:50:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:50:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:50:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:50:45,680 INFO L87 Difference]: Start difference. First operand 10909 states and 17895 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-29 05:50:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:50:50,952 INFO L93 Difference]: Finished difference Result 20136 states and 33516 transitions. [2023-11-29 05:50:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:50:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 147 [2023-11-29 05:50:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:50:51,018 INFO L225 Difference]: With dead ends: 20136 [2023-11-29 05:50:51,018 INFO L226 Difference]: Without dead ends: 10390 [2023-11-29 05:50:51,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:50:51,065 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2283 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:50:51,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 1053 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 05:50:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2023-11-29 05:50:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 9902. [2023-11-29 05:50:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9902 states, 7598 states have (on average 1.578441695182943) internal successors, (11993), 7845 states have internal predecessors, (11993), 1719 states have call successors, (1719), 537 states have call predecessors, (1719), 584 states have return successors, (2664), 1627 states have call predecessors, (2664), 1699 states have call successors, (2664) [2023-11-29 05:50:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9902 states to 9902 states and 16376 transitions. [2023-11-29 05:50:53,566 INFO L78 Accepts]: Start accepts. Automaton has 9902 states and 16376 transitions. Word has length 147 [2023-11-29 05:50:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:50:53,566 INFO L495 AbstractCegarLoop]: Abstraction has 9902 states and 16376 transitions. [2023-11-29 05:50:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-29 05:50:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9902 states and 16376 transitions. [2023-11-29 05:50:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 05:50:53,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:50:53,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:53,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 05:50:53,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:50:53,772 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:50:53,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1235989613, now seen corresponding path program 1 times [2023-11-29 05:50:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:50:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141668068] [2023-11-29 05:50:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:50:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:50:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:50:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:50:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:50:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:50:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:50:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:50:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:50:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:50:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:50:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:50:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:50:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:50:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 05:50:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:50:54,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:50:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141668068] [2023-11-29 05:50:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141668068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:50:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229888288] [2023-11-29 05:50:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:50:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:50:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:50:54,759 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:50:54,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:50:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:55,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:50:55,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 05:50:55,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229888288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:50:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-29 05:50:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364041145] [2023-11-29 05:50:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:55,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:50:55,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:50:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:50:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:50:55,298 INFO L87 Difference]: Start difference. First operand 9902 states and 16376 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 05:51:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:04,671 INFO L93 Difference]: Finished difference Result 30703 states and 51728 transitions. [2023-11-29 05:51:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:51:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-11-29 05:51:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:04,782 INFO L225 Difference]: With dead ends: 30703 [2023-11-29 05:51:04,782 INFO L226 Difference]: Without dead ends: 21981 [2023-11-29 05:51:04,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:51:04,820 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 3070 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 5378 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3258 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 5982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 5378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:04,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3258 Valid, 1394 Invalid, 5982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 5378 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 05:51:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21981 states. [2023-11-29 05:51:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21981 to 21607. [2023-11-29 05:51:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21607 states, 16431 states have (on average 1.5654555413547562) internal successors, (25722), 17009 states have internal predecessors, (25722), 3893 states have call successors, (3893), 1145 states have call predecessors, (3893), 1282 states have return successors, (6326), 3704 states have call predecessors, (6326), 3867 states have call successors, (6326) [2023-11-29 05:51:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21607 states to 21607 states and 35941 transitions. [2023-11-29 05:51:10,632 INFO L78 Accepts]: Start accepts. Automaton has 21607 states and 35941 transitions. Word has length 147 [2023-11-29 05:51:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:10,633 INFO L495 AbstractCegarLoop]: Abstraction has 21607 states and 35941 transitions. [2023-11-29 05:51:10,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 05:51:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 21607 states and 35941 transitions. [2023-11-29 05:51:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:51:10,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:10,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:10,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 05:51:10,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:51:10,839 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:10,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash 557265501, now seen corresponding path program 1 times [2023-11-29 05:51:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:10,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312939653] [2023-11-29 05:51:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:51:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:51:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:51:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:51:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:51:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:51:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:51:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:51:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:51:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:51:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:51:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:51:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:51:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:51:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:51:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:51:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:51:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:51:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 05:51:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 05:51:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312939653] [2023-11-29 05:51:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312939653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:51:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693064136] [2023-11-29 05:51:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:51:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:51:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:51:11,551 INFO L87 Difference]: Start difference. First operand 21607 states and 35941 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 05:51:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:53,196 INFO L93 Difference]: Finished difference Result 93781 states and 164313 transitions. [2023-11-29 05:51:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:51:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2023-11-29 05:51:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:53,747 INFO L225 Difference]: With dead ends: 93781 [2023-11-29 05:51:53,747 INFO L226 Difference]: Without dead ends: 73852 [2023-11-29 05:51:53,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:51:53,901 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 5904 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 6081 mSolverCounterSat, 2025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5977 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 8106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2025 IncrementalHoareTripleChecker+Valid, 6081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:53,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5977 Valid, 2236 Invalid, 8106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2025 Valid, 6081 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2023-11-29 05:51:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73852 states. [2023-11-29 05:52:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73852 to 27856. [2023-11-29 05:52:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27856 states, 21259 states have (on average 1.566630603509102) internal successors, (33305), 21940 states have internal predecessors, (33305), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-11-29 05:52:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 46499 transitions. [2023-11-29 05:52:02,969 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 46499 transitions. Word has length 151 [2023-11-29 05:52:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:02,970 INFO L495 AbstractCegarLoop]: Abstraction has 27856 states and 46499 transitions. [2023-11-29 05:52:02,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 05:52:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 46499 transitions. [2023-11-29 05:52:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:52:02,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:02,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:02,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:52:02,977 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:02,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 484878943, now seen corresponding path program 1 times [2023-11-29 05:52:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:02,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615771923] [2023-11-29 05:52:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:52:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:52:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:52:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:52:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:52:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:52:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:52:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 05:52:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:52:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:03,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615771923] [2023-11-29 05:52:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615771923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536906224] [2023-11-29 05:52:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:03,787 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:03,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:52:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:04,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:52:04,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 05:52:04,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:04,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536906224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:04,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:52:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857938094] [2023-11-29 05:52:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:04,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:52:04,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:04,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:52:04,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:52:04,128 INFO L87 Difference]: Start difference. First operand 27856 states and 46499 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:52:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:12,485 INFO L93 Difference]: Finished difference Result 28009 states and 46898 transitions. [2023-11-29 05:52:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:52:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2023-11-29 05:52:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:12,613 INFO L225 Difference]: With dead ends: 28009 [2023-11-29 05:52:12,613 INFO L226 Difference]: Without dead ends: 28006 [2023-11-29 05:52:12,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:52:12,630 INFO L413 NwaCegarLoop]: 1779 mSDtfsCounter, 933 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 7856 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:12,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 7856 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:52:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28006 states. [2023-11-29 05:52:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28006 to 27856. [2023-11-29 05:52:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27856 states, 21259 states have (on average 1.5654546309798203) internal successors, (33280), 21940 states have internal predecessors, (33280), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-11-29 05:52:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 46474 transitions. [2023-11-29 05:52:21,070 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 46474 transitions. Word has length 151 [2023-11-29 05:52:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:21,070 INFO L495 AbstractCegarLoop]: Abstraction has 27856 states and 46474 transitions. [2023-11-29 05:52:21,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:52:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 46474 transitions. [2023-11-29 05:52:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:52:21,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:21,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:21,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 05:52:21,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 05:52:21,278 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1686717797, now seen corresponding path program 1 times [2023-11-29 05:52:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971820740] [2023-11-29 05:52:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:52:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:52:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:52:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:52:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:52:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:52:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:52:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 05:52:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:52:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971820740] [2023-11-29 05:52:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971820740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670763547] [2023-11-29 05:52:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:22,053 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:22,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 05:52:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:22,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 05:52:22,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:22,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670763547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:22,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:22,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 05:52:22,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065617990] [2023-11-29 05:52:22,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:22,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:22,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:22,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:52:22,352 INFO L87 Difference]: Start difference. First operand 27856 states and 46474 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:52:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:30,649 INFO L93 Difference]: Finished difference Result 55863 states and 95172 transitions. [2023-11-29 05:52:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:52:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2023-11-29 05:52:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:30,790 INFO L225 Difference]: With dead ends: 55863 [2023-11-29 05:52:30,791 INFO L226 Difference]: Without dead ends: 28144 [2023-11-29 05:52:30,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:52:30,900 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 85 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:30,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2805 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:52:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28144 states. [2023-11-29 05:52:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28144 to 28144. [2023-11-29 05:52:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28144 states, 21499 states have (on average 1.5613749476719847) internal successors, (33568), 22180 states have internal predecessors, (33568), 4963 states have call successors, (4963), 1521 states have call predecessors, (4963), 1681 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-11-29 05:52:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28144 states to 28144 states and 46762 transitions. [2023-11-29 05:52:39,037 INFO L78 Accepts]: Start accepts. Automaton has 28144 states and 46762 transitions. Word has length 151 [2023-11-29 05:52:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:39,037 INFO L495 AbstractCegarLoop]: Abstraction has 28144 states and 46762 transitions. [2023-11-29 05:52:39,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:52:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28144 states and 46762 transitions. [2023-11-29 05:52:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:52:39,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:39,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:39,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 05:52:39,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 05:52:39,243 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:39,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash 937790866, now seen corresponding path program 1 times [2023-11-29 05:52:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439391400] [2023-11-29 05:52:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:52:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:52:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:52:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:52:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:52:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:52:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:52:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:52:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:52:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:52:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:52:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 05:52:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:52:39,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:39,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439391400] [2023-11-29 05:52:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439391400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626391952] [2023-11-29 05:52:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:39,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:39,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:39,975 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:39,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 05:52:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:40,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:52:40,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 05:52:40,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626391952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:40,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:40,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-29 05:52:40,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173222858] [2023-11-29 05:52:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:40,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:52:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:52:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:52:40,408 INFO L87 Difference]: Start difference. First operand 28144 states and 46762 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:52:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:57,298 INFO L93 Difference]: Finished difference Result 67748 states and 113476 transitions. [2023-11-29 05:52:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:52:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 153 [2023-11-29 05:52:57,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:57,483 INFO L225 Difference]: With dead ends: 67748 [2023-11-29 05:52:57,483 INFO L226 Difference]: Without dead ends: 42069 [2023-11-29 05:52:57,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:52:57,582 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 3095 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:57,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3209 Valid, 1679 Invalid, 6108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 05:52:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42069 states. [2023-11-29 05:53:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42069 to 41275. [2023-11-29 05:53:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41275 states, 31427 states have (on average 1.564482769593025) internal successors, (49167), 32438 states have internal predecessors, (49167), 7400 states have call successors, (7400), 2233 states have call predecessors, (7400), 2447 states have return successors, (12724), 7107 states have call predecessors, (12724), 7346 states have call successors, (12724) [2023-11-29 05:53:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41275 states to 41275 states and 69291 transitions. [2023-11-29 05:53:10,919 INFO L78 Accepts]: Start accepts. Automaton has 41275 states and 69291 transitions. Word has length 153 [2023-11-29 05:53:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:10,919 INFO L495 AbstractCegarLoop]: Abstraction has 41275 states and 69291 transitions. [2023-11-29 05:53:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:53:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 41275 states and 69291 transitions. [2023-11-29 05:53:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-29 05:53:10,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:10,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:10,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 05:53:11,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 05:53:11,125 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:11,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash 588575739, now seen corresponding path program 1 times [2023-11-29 05:53:11,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:11,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569407355] [2023-11-29 05:53:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:53:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:53:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:53:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:53:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:53:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:53:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:53:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:53:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:53:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:53:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:53:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:53:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 05:53:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 05:53:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:53:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569407355] [2023-11-29 05:53:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569407355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598668580] [2023-11-29 05:53:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:11,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:11,977 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:11,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 05:53:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:12,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:53:12,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 05:53:12,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:53:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598668580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:12,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-11-29 05:53:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030998283] [2023-11-29 05:53:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:53:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:53:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:53:12,390 INFO L87 Difference]: Start difference. First operand 41275 states and 69291 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-29 05:53:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:53:29,806 INFO L93 Difference]: Finished difference Result 94142 states and 162568 transitions. [2023-11-29 05:53:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:53:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2023-11-29 05:53:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:53:30,086 INFO L225 Difference]: With dead ends: 94142 [2023-11-29 05:53:30,086 INFO L226 Difference]: Without dead ends: 52990 [2023-11-29 05:53:30,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:53:30,313 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 1657 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:53:30,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 5594 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:53:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52990 states. [2023-11-29 05:53:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52990 to 52895. [2023-11-29 05:53:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52895 states, 41206 states have (on average 1.5602096782022035) internal successors, (64290), 42314 states have internal predecessors, (64290), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-11-29 05:53:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52895 states to 52895 states and 92647 transitions. [2023-11-29 05:53:47,063 INFO L78 Accepts]: Start accepts. Automaton has 52895 states and 92647 transitions. Word has length 154 [2023-11-29 05:53:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 52895 states and 92647 transitions. [2023-11-29 05:53:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-29 05:53:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 52895 states and 92647 transitions. [2023-11-29 05:53:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-29 05:53:47,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:47,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:47,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 05:53:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 05:53:47,269 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:47,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1616542892, now seen corresponding path program 1 times [2023-11-29 05:53:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860320110] [2023-11-29 05:53:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:53:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:53:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:53:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:53:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:53:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:53:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:53:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:53:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:53:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:53:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:53:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:53:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:53:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 05:53:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 05:53:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 05:53:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860320110] [2023-11-29 05:53:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860320110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216221489] [2023-11-29 05:53:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:48,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:48,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:48,054 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:48,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 05:53:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:48,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:53:48,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:53:48,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:53:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216221489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:48,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:48,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-29 05:53:48,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166797402] [2023-11-29 05:53:48,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:48,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:53:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:53:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:53:48,481 INFO L87 Difference]: Start difference. First operand 52895 states and 92647 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:54:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:54:10,067 INFO L93 Difference]: Finished difference Result 99622 states and 173113 transitions. [2023-11-29 05:54:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:54:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 156 [2023-11-29 05:54:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:54:10,336 INFO L225 Difference]: With dead ends: 99622 [2023-11-29 05:54:10,336 INFO L226 Difference]: Without dead ends: 53802 [2023-11-29 05:54:10,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:54:10,616 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 3150 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 5923 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 5923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:54:10,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 1631 Invalid, 6667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 5923 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 05:54:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53802 states. [2023-11-29 05:54:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53802 to 52883. [2023-11-29 05:54:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52883 states, 41194 states have (on average 1.5597902607175802) internal successors, (64254), 42302 states have internal predecessors, (64254), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-11-29 05:54:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52883 states to 52883 states and 92611 transitions. [2023-11-29 05:54:27,048 INFO L78 Accepts]: Start accepts. Automaton has 52883 states and 92611 transitions. Word has length 156 [2023-11-29 05:54:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:54:27,048 INFO L495 AbstractCegarLoop]: Abstraction has 52883 states and 92611 transitions. [2023-11-29 05:54:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:54:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 52883 states and 92611 transitions. [2023-11-29 05:54:27,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 05:54:27,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:54:27,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:27,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 05:54:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:54:27,254 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:54:27,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash -684331586, now seen corresponding path program 1 times [2023-11-29 05:54:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079536872] [2023-11-29 05:54:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:54:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:54:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:54:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:54:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:54:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:54:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:54:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:54:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:54:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:54:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:54:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:54:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:54:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:54:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:54:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:54:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:54:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:54:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-29 05:54:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 05:54:28,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079536872] [2023-11-29 05:54:28,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079536872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:54:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593619476] [2023-11-29 05:54:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:28,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:54:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:28,036 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:54:28,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 05:54:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:54:28,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 05:54:28,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:54:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593619476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:28,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:54:28,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 05:54:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917563410] [2023-11-29 05:54:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:54:28,351 INFO L87 Difference]: Start difference. First operand 52883 states and 92611 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:54:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:54:44,243 INFO L93 Difference]: Finished difference Result 106027 states and 194975 transitions. [2023-11-29 05:54:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:54:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2023-11-29 05:54:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:54:44,510 INFO L225 Difference]: With dead ends: 106027 [2023-11-29 05:54:44,510 INFO L226 Difference]: Without dead ends: 52749 [2023-11-29 05:54:44,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:54:44,914 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 91 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:54:44,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2801 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:54:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52749 states. [2023-11-29 05:54:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52749 to 52749. [2023-11-29 05:54:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52749 states, 41060 states have (on average 1.5518265952264978) internal successors, (63718), 42168 states have internal predecessors, (63718), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-11-29 05:55:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52749 states to 52749 states and 92075 transitions. [2023-11-29 05:55:00,371 INFO L78 Accepts]: Start accepts. Automaton has 52749 states and 92075 transitions. Word has length 158 [2023-11-29 05:55:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:55:00,372 INFO L495 AbstractCegarLoop]: Abstraction has 52749 states and 92075 transitions. [2023-11-29 05:55:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:55:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 52749 states and 92075 transitions. [2023-11-29 05:55:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 05:55:00,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:55:00,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:00,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-29 05:55:00,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 05:55:00,578 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:55:00,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1000022328, now seen corresponding path program 1 times [2023-11-29 05:55:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069689069] [2023-11-29 05:55:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:00,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:55:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:55:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:55:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:55:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:55:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:55:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:55:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:55:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:55:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:55:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:55:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:55:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:55:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:55:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:55:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:55:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:55:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:55:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 05:55:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:55:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069689069] [2023-11-29 05:55:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069689069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912129233] [2023-11-29 05:55:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:01,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:01,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:01,314 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:01,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 05:55:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:55:01,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:55:01,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:55:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912129233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:55:01,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:55:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-29 05:55:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593447862] [2023-11-29 05:55:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:55:01,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:55:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:01,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:55:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:55:01,727 INFO L87 Difference]: Start difference. First operand 52749 states and 92075 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:55:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:55:36,342 INFO L93 Difference]: Finished difference Result 146883 states and 278853 transitions. [2023-11-29 05:55:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:55:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 159 [2023-11-29 05:55:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:55:36,844 INFO L225 Difference]: With dead ends: 146883 [2023-11-29 05:55:36,844 INFO L226 Difference]: Without dead ends: 94223 [2023-11-29 05:55:37,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:55:37,559 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 5392 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 1481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5502 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1481 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:55:37,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5502 Valid, 1131 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1481 Valid, 3508 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 05:55:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94223 states. [2023-11-29 05:56:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94223 to 83904. [2023-11-29 05:56:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83904 states, 65231 states have (on average 1.5436832181018227) internal successors, (100696), 67107 states have internal predecessors, (100696), 13256 states have call successors, (13256), 4771 states have call predecessors, (13256), 5416 states have return successors, (28253), 12889 states have call predecessors, (28253), 13154 states have call successors, (28253) [2023-11-29 05:56:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83904 states to 83904 states and 142205 transitions. [2023-11-29 05:56:04,951 INFO L78 Accepts]: Start accepts. Automaton has 83904 states and 142205 transitions. Word has length 159 [2023-11-29 05:56:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:56:04,951 INFO L495 AbstractCegarLoop]: Abstraction has 83904 states and 142205 transitions. [2023-11-29 05:56:04,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:56:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 83904 states and 142205 transitions. [2023-11-29 05:56:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 05:56:04,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:56:04,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:04,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 05:56:05,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:56:05,159 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:56:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1893263647, now seen corresponding path program 1 times [2023-11-29 05:56:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031751888] [2023-11-29 05:56:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:56:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:56:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:56:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:56:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:56:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:56:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:56:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:56:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:56:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:56:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:56:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:56:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:56:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:56:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:56:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:56:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:56:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:56:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 05:56:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:56:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031751888] [2023-11-29 05:56:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031751888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:56:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536392733] [2023-11-29 05:56:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:56:05,935 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:56:05,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 05:56:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:06,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:56:06,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:56:06,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:56:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536392733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:56:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:56:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-29 05:56:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174892208] [2023-11-29 05:56:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:56:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:56:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:56:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:56:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:56:06,358 INFO L87 Difference]: Start difference. First operand 83904 states and 142205 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:56:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:56:37,376 INFO L93 Difference]: Finished difference Result 162119 states and 274492 transitions. [2023-11-29 05:56:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:56:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 160 [2023-11-29 05:56:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:56:37,798 INFO L225 Difference]: With dead ends: 162119 [2023-11-29 05:56:37,798 INFO L226 Difference]: Without dead ends: 85409 [2023-11-29 05:56:38,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:56:38,422 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 2975 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 6094 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 6094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:56:38,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3089 Valid, 1788 Invalid, 6787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 6094 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:56:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85409 states. [2023-11-29 05:57:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85409 to 83868. [2023-11-29 05:57:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83868 states, 65195 states have (on average 1.5428790551422655) internal successors, (100588), 67071 states have internal predecessors, (100588), 13256 states have call successors, (13256), 4771 states have call predecessors, (13256), 5416 states have return successors, (28253), 12889 states have call predecessors, (28253), 13154 states have call successors, (28253) [2023-11-29 05:57:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83868 states to 83868 states and 142097 transitions. [2023-11-29 05:57:03,757 INFO L78 Accepts]: Start accepts. Automaton has 83868 states and 142097 transitions. Word has length 160 [2023-11-29 05:57:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:57:03,757 INFO L495 AbstractCegarLoop]: Abstraction has 83868 states and 142097 transitions. [2023-11-29 05:57:03,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:57:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 83868 states and 142097 transitions. [2023-11-29 05:57:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 05:57:03,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:57:03,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:57:03,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-29 05:57:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:57:03,962 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:57:03,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:57:03,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1538672905, now seen corresponding path program 1 times [2023-11-29 05:57:03,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:57:03,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109057170] [2023-11-29 05:57:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:57:03,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:57:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:57:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:57:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:57:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:57:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:57:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:57:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:57:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:57:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:57:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:57:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:57:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:57:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:57:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 05:57:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:57:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:57:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109057170] [2023-11-29 05:57:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109057170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:57:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394779348] [2023-11-29 05:57:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:57:04,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:57:04,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:57:04,672 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:57:04,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 05:57:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:04,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:57:04,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:57:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:57:04,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:57:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394779348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:57:04,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:57:04,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-11-29 05:57:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916997746] [2023-11-29 05:57:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:57:04,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:57:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:57:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:57:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:57:04,980 INFO L87 Difference]: Start difference. First operand 83868 states and 142097 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:57:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:57:30,590 INFO L93 Difference]: Finished difference Result 169556 states and 292927 transitions. [2023-11-29 05:57:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:57:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2023-11-29 05:57:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:57:31,300 INFO L225 Difference]: With dead ends: 169556 [2023-11-29 05:57:31,300 INFO L226 Difference]: Without dead ends: 85829 [2023-11-29 05:57:32,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:57:32,156 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1 mSDsluCounter, 2901 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:57:32,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3873 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:57:32,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85829 states. [2023-11-29 05:57:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85829 to 84798. [2023-11-29 05:57:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84798 states, 65999 states have (on average 1.5362657009954697) internal successors, (101392), 67662 states have internal predecessors, (101392), 13256 states have call successors, (13256), 4771 states have call predecessors, (13256), 5542 states have return successors, (28592), 13228 states have call predecessors, (28592), 13154 states have call successors, (28592) [2023-11-29 05:57:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84798 states to 84798 states and 143240 transitions. [2023-11-29 05:57:58,737 INFO L78 Accepts]: Start accepts. Automaton has 84798 states and 143240 transitions. Word has length 162 [2023-11-29 05:57:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:57:58,737 INFO L495 AbstractCegarLoop]: Abstraction has 84798 states and 143240 transitions. [2023-11-29 05:57:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 05:57:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 84798 states and 143240 transitions. [2023-11-29 05:57:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-29 05:57:58,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:57:58,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:57:58,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 05:57:58,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 05:57:58,944 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:57:58,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:57:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1289987810, now seen corresponding path program 1 times [2023-11-29 05:57:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:57:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579667235] [2023-11-29 05:57:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:57:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:57:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:57:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:57:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:57:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:57:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:57:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:57:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:57:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:57:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:57:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:57:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:57:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:57:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:57:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:57:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-29 05:57:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:57:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:57:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579667235] [2023-11-29 05:57:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579667235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:57:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992121479] [2023-11-29 05:57:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:57:59,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:57:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:57:59,738 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:57:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba3bb0-aeed-4469-972e-59ab32421dc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 05:58:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:00,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:58:00,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:58:00,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:58:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992121479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:00,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 9] total 26 [2023-11-29 05:58:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749517996] [2023-11-29 05:58:00,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:58:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:58:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:58:00,589 INFO L87 Difference]: Start difference. First operand 84798 states and 143240 transitions. Second operand has 26 states, 25 states have (on average 10.24) internal successors, (256), 21 states have internal predecessors, (256), 10 states have call successors, (51), 10 states have call predecessors, (51), 12 states have return successors, (48), 15 states have call predecessors, (48), 10 states have call successors, (48)