./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:56:02,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:56:03,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:56:03,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:56:03,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:56:03,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:56:03,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:56:03,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:56:03,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:56:03,064 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:56:03,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:56:03,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:56:03,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:56:03,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:56:03,065 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:56:03,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:56:03,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:56:03,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:56:03,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:56:03,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:56:03,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:56:03,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:56:03,068 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:56:03,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:56:03,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:56:03,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:56:03,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:56:03,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:56:03,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:56:03,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:56:03,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:56:03,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:56:03,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:56:03,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:56:03,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:56:03,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 [2024-11-23 22:56:03,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:56:03,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:56:03,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:56:03,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:56:03,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:56:03,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2024-11-23 22:56:06,589 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/data/ba1fa0012/70232b6e344b4de998bfea4ea9941012/FLAGeab668480 [2024-11-23 22:56:07,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:56:07,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2024-11-23 22:56:07,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/data/ba1fa0012/70232b6e344b4de998bfea4ea9941012/FLAGeab668480 [2024-11-23 22:56:07,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/data/ba1fa0012/70232b6e344b4de998bfea4ea9941012 [2024-11-23 22:56:07,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:56:07,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:56:07,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:56:07,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:56:07,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:56:07,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:07" (1/1) ... [2024-11-23 22:56:07,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3565c95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:07, skipping insertion in model container [2024-11-23 22:56:07,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:56:07" (1/1) ... [2024-11-23 22:56:07,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:56:07,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2024-11-23 22:56:07,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:56:07,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:56:07,998 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-23 22:56:08,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1128] [2024-11-23 22:56:08,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1540] [2024-11-23 22:56:08,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1847] [2024-11-23 22:56:08,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1946] [2024-11-23 22:56:08,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2162] [2024-11-23 22:56:08,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2528] [2024-11-23 22:56:08,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2563] [2024-11-23 22:56:08,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2591] [2024-11-23 22:56:08,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2877] [2024-11-23 22:56:08,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2886] [2024-11-23 22:56:08,192 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2024-11-23 22:56:08,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:56:08,230 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:56:08,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08 WrapperNode [2024-11-23 22:56:08,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:56:08,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:56:08,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:56:08,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:56:08,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,321 INFO L138 Inliner]: procedures = 127, calls = 185, calls flagged for inlining = 58, calls inlined = 49, statements flattened = 894 [2024-11-23 22:56:08,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:56:08,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:56:08,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:56:08,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:56:08,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,373 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-23 22:56:08,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,406 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:56:08,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:56:08,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:56:08,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:56:08,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (1/1) ... [2024-11-23 22:56:08,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:56:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:08,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:56:08,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:56:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-23 22:56:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-23 22:56:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-23 22:56:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-23 22:56:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-23 22:56:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-23 22:56:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-23 22:56:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-23 22:56:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-23 22:56:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-23 22:56:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-23 22:56:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-23 22:56:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-23 22:56:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:56:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-23 22:56:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-23 22:56:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-23 22:56:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-23 22:56:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-23 22:56:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-23 22:56:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-23 22:56:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-23 22:56:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-23 22:56:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-23 22:56:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-23 22:56:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-23 22:56:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:56:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-23 22:56:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-23 22:56:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:56:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:56:08,855 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:56:08,857 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:56:09,997 INFO L? ?]: Removed 394 outVars from TransFormulas that were not future-live. [2024-11-23 22:56:09,997 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:56:10,030 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:56:10,030 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:56:10,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:10 BoogieIcfgContainer [2024-11-23 22:56:10,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:56:10,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:56:10,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:56:10,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:56:10,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:56:07" (1/3) ... [2024-11-23 22:56:10,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110bf129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:10, skipping insertion in model container [2024-11-23 22:56:10,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:56:08" (2/3) ... [2024-11-23 22:56:10,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110bf129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:56:10, skipping insertion in model container [2024-11-23 22:56:10,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:56:10" (3/3) ... [2024-11-23 22:56:10,046 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2024-11-23 22:56:10,066 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:56:10,070 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec4_product18.cil.c that has 18 procedures, 290 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:56:10,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:56:10,193 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41051343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:56:10,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:56:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 231 states have (on average 1.5454545454545454) internal successors, (357), 233 states have internal predecessors, (357), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:56:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-23 22:56:10,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:10,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:56:10,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:10,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 162945201, now seen corresponding path program 1 times [2024-11-23 22:56:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316988995] [2024-11-23 22:56:10,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 22:56:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316988995] [2024-11-23 22:56:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316988995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368563169] [2024-11-23 22:56:11,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:11,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:11,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:56:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:11,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:56:11,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:56:11,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368563169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-23 22:56:11,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102243922] [2024-11-23 22:56:11,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:11,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:56:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:11,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:56:11,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:11,741 INFO L87 Difference]: Start difference. First operand has 290 states, 231 states have (on average 1.5454545454545454) internal successors, (357), 233 states have internal predecessors, (357), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:11,827 INFO L93 Difference]: Finished difference Result 427 states and 629 transitions. [2024-11-23 22:56:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:56:11,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2024-11-23 22:56:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:11,846 INFO L225 Difference]: With dead ends: 427 [2024-11-23 22:56:11,846 INFO L226 Difference]: Without dead ends: 283 [2024-11-23 22:56:11,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:11,856 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:11,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-23 22:56:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-23 22:56:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 225 states have (on average 1.5377777777777777) internal successors, (346), 226 states have internal predecessors, (346), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 22:56:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 425 transitions. [2024-11-23 22:56:11,951 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 425 transitions. Word has length 92 [2024-11-23 22:56:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:11,954 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 425 transitions. [2024-11-23 22:56:11,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 425 transitions. [2024-11-23 22:56:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-23 22:56:11,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:11,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:56:11,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:56:12,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:12,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:12,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 116389047, now seen corresponding path program 1 times [2024-11-23 22:56:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316698404] [2024-11-23 22:56:12,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 22:56:12,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316698404] [2024-11-23 22:56:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316698404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874768091] [2024-11-23 22:56:12,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:12,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:12,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:12,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:56:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:13,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:56:13,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:56:13,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:13,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874768091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:13,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:13,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83551402] [2024-11-23 22:56:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:13,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:13,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:13,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:13,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:13,115 INFO L87 Difference]: Start difference. First operand 283 states and 425 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:13,195 INFO L93 Difference]: Finished difference Result 416 states and 609 transitions. [2024-11-23 22:56:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:13,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2024-11-23 22:56:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:13,202 INFO L225 Difference]: With dead ends: 416 [2024-11-23 22:56:13,203 INFO L226 Difference]: Without dead ends: 285 [2024-11-23 22:56:13,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:13,209 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:13,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 844 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-23 22:56:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2024-11-23 22:56:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 226 states have (on average 1.5353982300884956) internal successors, (347), 227 states have internal predecessors, (347), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 22:56:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 426 transitions. [2024-11-23 22:56:13,255 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 426 transitions. Word has length 92 [2024-11-23 22:56:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:13,256 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 426 transitions. [2024-11-23 22:56:13,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 426 transitions. [2024-11-23 22:56:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 22:56:13,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:13,264 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:56:13,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:56:13,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:13,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:13,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1566352246, now seen corresponding path program 1 times [2024-11-23 22:56:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24312234] [2024-11-23 22:56:13,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 22:56:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24312234] [2024-11-23 22:56:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24312234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174999591] [2024-11-23 22:56:13,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:13,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:13,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:56:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:14,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:14,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:56:14,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174999591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44705311] [2024-11-23 22:56:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:14,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:14,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:14,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:14,320 INFO L87 Difference]: Start difference. First operand 284 states and 426 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:14,379 INFO L93 Difference]: Finished difference Result 598 states and 911 transitions. [2024-11-23 22:56:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-23 22:56:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:14,390 INFO L225 Difference]: With dead ends: 598 [2024-11-23 22:56:14,391 INFO L226 Difference]: Without dead ends: 340 [2024-11-23 22:56:14,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:14,393 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 107 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:14,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 812 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-23 22:56:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 332. [2024-11-23 22:56:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 263 states have (on average 1.5513307984790874) internal successors, (408), 264 states have internal predecessors, (408), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:56:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 509 transitions. [2024-11-23 22:56:14,447 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 509 transitions. Word has length 100 [2024-11-23 22:56:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:14,448 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 509 transitions. [2024-11-23 22:56:14,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 509 transitions. [2024-11-23 22:56:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:56:14,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:14,455 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:56:14,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:56:14,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:14,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:14,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash 645022532, now seen corresponding path program 1 times [2024-11-23 22:56:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:14,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66795352] [2024-11-23 22:56:14,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:14,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 22:56:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66795352] [2024-11-23 22:56:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66795352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91982244] [2024-11-23 22:56:15,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:15,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:15,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:15,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:15,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:56:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:15,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:56:15,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 22:56:15,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:15,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91982244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:15,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:15,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 22:56:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884556342] [2024-11-23 22:56:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:15,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:15,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:15,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:15,400 INFO L87 Difference]: Start difference. First operand 332 states and 509 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:15,502 INFO L93 Difference]: Finished difference Result 655 states and 1008 transitions. [2024-11-23 22:56:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:15,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-11-23 22:56:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:15,508 INFO L225 Difference]: With dead ends: 655 [2024-11-23 22:56:15,508 INFO L226 Difference]: Without dead ends: 334 [2024-11-23 22:56:15,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:15,513 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 2 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:15,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1657 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-23 22:56:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2024-11-23 22:56:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 264 states have (on average 1.5492424242424243) internal successors, (409), 266 states have internal predecessors, (409), 51 states have call successors, (51), 17 states have call predecessors, (51), 18 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2024-11-23 22:56:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 512 transitions. [2024-11-23 22:56:15,550 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 512 transitions. Word has length 101 [2024-11-23 22:56:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:15,551 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 512 transitions. [2024-11-23 22:56:15,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 512 transitions. [2024-11-23 22:56:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 22:56:15,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:15,558 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-23 22:56:15,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:56:15,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:15,759 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:15,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash -976172446, now seen corresponding path program 1 times [2024-11-23 22:56:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291685342] [2024-11-23 22:56:15,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 22:56:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291685342] [2024-11-23 22:56:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291685342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860181332] [2024-11-23 22:56:16,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:16,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:16,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:56:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:16,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:56:16,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 22:56:16,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860181332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-23 22:56:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082555738] [2024-11-23 22:56:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:16,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:16,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:16,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:56:16,539 INFO L87 Difference]: Start difference. First operand 334 states and 512 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:16,667 INFO L93 Difference]: Finished difference Result 657 states and 1013 transitions. [2024-11-23 22:56:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:16,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-11-23 22:56:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:16,676 INFO L225 Difference]: With dead ends: 657 [2024-11-23 22:56:16,676 INFO L226 Difference]: Without dead ends: 336 [2024-11-23 22:56:16,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:56:16,678 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 2 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:16,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1643 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:56:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-23 22:56:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-11-23 22:56:16,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 265 states have (on average 1.5471698113207548) internal successors, (410), 268 states have internal predecessors, (410), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2024-11-23 22:56:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 518 transitions. [2024-11-23 22:56:16,713 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 518 transitions. Word has length 102 [2024-11-23 22:56:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:16,713 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 518 transitions. [2024-11-23 22:56:16,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 518 transitions. [2024-11-23 22:56:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 22:56:16,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:16,718 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:16,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:56:16,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:16,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:16,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 885439204, now seen corresponding path program 1 times [2024-11-23 22:56:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622496466] [2024-11-23 22:56:16,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 22:56:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622496466] [2024-11-23 22:56:17,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622496466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:56:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903487874] [2024-11-23 22:56:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:17,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:17,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:17,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:17,158 INFO L87 Difference]: Start difference. First operand 336 states and 518 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:17,261 INFO L93 Difference]: Finished difference Result 649 states and 1004 transitions. [2024-11-23 22:56:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:17,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2024-11-23 22:56:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:17,269 INFO L225 Difference]: With dead ends: 649 [2024-11-23 22:56:17,269 INFO L226 Difference]: Without dead ends: 336 [2024-11-23 22:56:17,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:17,272 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 2 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:17,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1661 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-23 22:56:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-11-23 22:56:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 265 states have (on average 1.5471698113207548) internal successors, (410), 268 states have internal predecessors, (410), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2024-11-23 22:56:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 517 transitions. [2024-11-23 22:56:17,305 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 517 transitions. Word has length 103 [2024-11-23 22:56:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:17,306 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 517 transitions. [2024-11-23 22:56:17,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 517 transitions. [2024-11-23 22:56:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 22:56:17,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:17,309 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:17,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:56:17,309 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:17,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1348826336, now seen corresponding path program 2 times [2024-11-23 22:56:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17839330] [2024-11-23 22:56:17,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:56:17,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:17,350 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:56:17,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 22:56:17,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:17,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17839330] [2024-11-23 22:56:17,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17839330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:17,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:17,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:56:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975497917] [2024-11-23 22:56:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:17,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:56:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:17,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:56:17,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:17,572 INFO L87 Difference]: Start difference. First operand 336 states and 517 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:18,107 INFO L93 Difference]: Finished difference Result 591 states and 933 transitions. [2024-11-23 22:56:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:56:18,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-11-23 22:56:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:18,115 INFO L225 Difference]: With dead ends: 591 [2024-11-23 22:56:18,117 INFO L226 Difference]: Without dead ends: 587 [2024-11-23 22:56:18,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:56:18,119 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 403 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:18,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 2678 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:56:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-23 22:56:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 578. [2024-11-23 22:56:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 456 states have (on average 1.5723684210526316) internal successors, (717), 459 states have internal predecessors, (717), 90 states have call successors, (90), 30 states have call predecessors, (90), 31 states have return successors, (105), 88 states have call predecessors, (105), 89 states have call successors, (105) [2024-11-23 22:56:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 912 transitions. [2024-11-23 22:56:18,182 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 912 transitions. Word has length 104 [2024-11-23 22:56:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:18,183 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 912 transitions. [2024-11-23 22:56:18,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 912 transitions. [2024-11-23 22:56:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 22:56:18,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:18,190 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:18,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:56:18,190 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:18,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1396248269, now seen corresponding path program 1 times [2024-11-23 22:56:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396869957] [2024-11-23 22:56:18,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 22:56:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396869957] [2024-11-23 22:56:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396869957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:56:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847827466] [2024-11-23 22:56:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:18,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:18,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:18,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:18,444 INFO L87 Difference]: Start difference. First operand 578 states and 912 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:18,537 INFO L93 Difference]: Finished difference Result 1125 states and 1784 transitions. [2024-11-23 22:56:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2024-11-23 22:56:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:18,543 INFO L225 Difference]: With dead ends: 1125 [2024-11-23 22:56:18,543 INFO L226 Difference]: Without dead ends: 582 [2024-11-23 22:56:18,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:56:18,547 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 1 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:18,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1664 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-23 22:56:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-11-23 22:56:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 458 states have (on average 1.5698689956331877) internal successors, (719), 463 states have internal predecessors, (719), 90 states have call successors, (90), 30 states have call predecessors, (90), 33 states have return successors, (108), 88 states have call predecessors, (108), 89 states have call successors, (108) [2024-11-23 22:56:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 917 transitions. [2024-11-23 22:56:18,598 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 917 transitions. Word has length 105 [2024-11-23 22:56:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:18,599 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 917 transitions. [2024-11-23 22:56:18,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 917 transitions. [2024-11-23 22:56:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:56:18,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:18,604 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 22:56:18,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:56:18,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:18,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash -878191150, now seen corresponding path program 1 times [2024-11-23 22:56:18,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:18,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380355917] [2024-11-23 22:56:18,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:56:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380355917] [2024-11-23 22:56:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380355917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041095288] [2024-11-23 22:56:18,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:18,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:18,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:18,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:56:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:19,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:56:19,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 22:56:19,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041095288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 22:56:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197230826] [2024-11-23 22:56:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:19,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:19,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:19,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:19,232 INFO L87 Difference]: Start difference. First operand 582 states and 917 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:19,334 INFO L93 Difference]: Finished difference Result 1145 states and 1812 transitions. [2024-11-23 22:56:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-23 22:56:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:19,340 INFO L225 Difference]: With dead ends: 1145 [2024-11-23 22:56:19,340 INFO L226 Difference]: Without dead ends: 588 [2024-11-23 22:56:19,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:19,343 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 1 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:19,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1658 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:56:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-23 22:56:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2024-11-23 22:56:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 459 states have (on average 1.5686274509803921) internal successors, (720), 465 states have internal predecessors, (720), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (111), 88 states have call predecessors, (111), 89 states have call successors, (111) [2024-11-23 22:56:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 921 transitions. [2024-11-23 22:56:19,402 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 921 transitions. Word has length 108 [2024-11-23 22:56:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:19,402 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 921 transitions. [2024-11-23 22:56:19,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:19,403 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 921 transitions. [2024-11-23 22:56:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:56:19,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:19,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:19,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:56:19,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:19,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:19,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2068077788, now seen corresponding path program 1 times [2024-11-23 22:56:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357371144] [2024-11-23 22:56:19,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 22:56:19,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:19,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357371144] [2024-11-23 22:56:19,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357371144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:19,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:19,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:56:19,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373164927] [2024-11-23 22:56:19,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:19,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:56:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:19,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:56:19,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:19,821 INFO L87 Difference]: Start difference. First operand 584 states and 921 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:56:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:20,015 INFO L93 Difference]: Finished difference Result 1128 states and 1783 transitions. [2024-11-23 22:56:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:56:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 106 [2024-11-23 22:56:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:20,021 INFO L225 Difference]: With dead ends: 1128 [2024-11-23 22:56:20,021 INFO L226 Difference]: Without dead ends: 588 [2024-11-23 22:56:20,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:56:20,024 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 7 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:20,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2834 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:56:20,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-23 22:56:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 586. [2024-11-23 22:56:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 461 states have (on average 1.5661605206073752) internal successors, (722), 466 states have internal predecessors, (722), 90 states have call successors, (90), 31 states have call predecessors, (90), 34 states have return successors, (109), 88 states have call predecessors, (109), 89 states have call successors, (109) [2024-11-23 22:56:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 921 transitions. [2024-11-23 22:56:20,059 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 921 transitions. Word has length 106 [2024-11-23 22:56:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:20,059 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 921 transitions. [2024-11-23 22:56:20,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:56:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 921 transitions. [2024-11-23 22:56:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 22:56:20,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:20,063 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:20,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:56:20,063 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:20,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1962732918, now seen corresponding path program 2 times [2024-11-23 22:56:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127579400] [2024-11-23 22:56:20,064 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:56:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:20,091 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:56:20,091 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 22:56:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127579400] [2024-11-23 22:56:20,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127579400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:20,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:20,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:56:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584885431] [2024-11-23 22:56:20,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:20,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:56:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:20,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:56:20,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:20,278 INFO L87 Difference]: Start difference. First operand 586 states and 921 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:20,750 INFO L93 Difference]: Finished difference Result 1091 states and 1747 transitions. [2024-11-23 22:56:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:56:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-23 22:56:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:20,761 INFO L225 Difference]: With dead ends: 1091 [2024-11-23 22:56:20,761 INFO L226 Difference]: Without dead ends: 1085 [2024-11-23 22:56:20,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:56:20,764 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 707 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:20,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2392 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:56:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2024-11-23 22:56:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 984. [2024-11-23 22:56:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 776 states have (on average 1.5940721649484537) internal successors, (1237), 784 states have internal predecessors, (1237), 152 states have call successors, (152), 47 states have call predecessors, (152), 55 states have return successors, (207), 152 states have call predecessors, (207), 151 states have call successors, (207) [2024-11-23 22:56:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1596 transitions. [2024-11-23 22:56:20,853 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1596 transitions. Word has length 107 [2024-11-23 22:56:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:20,853 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1596 transitions. [2024-11-23 22:56:20,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1596 transitions. [2024-11-23 22:56:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:56:20,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:20,863 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:20,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:56:20,864 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:20,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1426114867, now seen corresponding path program 1 times [2024-11-23 22:56:20,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:20,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25002465] [2024-11-23 22:56:20,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:20,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25002465] [2024-11-23 22:56:21,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25002465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121639700] [2024-11-23 22:56:21,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:21,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:21,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:56:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:21,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:56:21,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 22:56:21,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121639700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:21,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:21,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 22:56:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87717671] [2024-11-23 22:56:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:21,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:56:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:21,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:56:21,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:21,495 INFO L87 Difference]: Start difference. First operand 984 states and 1596 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:21,612 INFO L93 Difference]: Finished difference Result 1939 states and 3152 transitions. [2024-11-23 22:56:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:56:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2024-11-23 22:56:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:21,621 INFO L225 Difference]: With dead ends: 1939 [2024-11-23 22:56:21,622 INFO L226 Difference]: Without dead ends: 996 [2024-11-23 22:56:21,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:21,626 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:21,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1658 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-23 22:56:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 986. [2024-11-23 22:56:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 777 states have (on average 1.5933075933075933) internal successors, (1238), 786 states have internal predecessors, (1238), 152 states have call successors, (152), 47 states have call predecessors, (152), 56 states have return successors, (208), 152 states have call predecessors, (208), 151 states have call successors, (208) [2024-11-23 22:56:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1598 transitions. [2024-11-23 22:56:21,704 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1598 transitions. Word has length 110 [2024-11-23 22:56:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:21,704 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1598 transitions. [2024-11-23 22:56:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 22:56:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1598 transitions. [2024-11-23 22:56:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:56:21,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:21,712 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:21,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 22:56:21,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:21,916 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:21,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1811014351, now seen corresponding path program 1 times [2024-11-23 22:56:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965807745] [2024-11-23 22:56:21,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965807745] [2024-11-23 22:56:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965807745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:22,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830430470] [2024-11-23 22:56:22,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:22,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:22,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:22,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:22,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:56:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:22,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:22,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 22:56:22,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:56:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 22:56:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830430470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:56:22,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:56:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-23 22:56:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897187582] [2024-11-23 22:56:22,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:56:22,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:56:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:22,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:56:22,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:56:22,594 INFO L87 Difference]: Start difference. First operand 986 states and 1598 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:56:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:22,976 INFO L93 Difference]: Finished difference Result 3001 states and 5064 transitions. [2024-11-23 22:56:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:56:22,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 110 [2024-11-23 22:56:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:22,992 INFO L225 Difference]: With dead ends: 3001 [2024-11-23 22:56:22,992 INFO L226 Difference]: Without dead ends: 2056 [2024-11-23 22:56:22,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:56:22,997 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 405 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:22,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 2796 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:56:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2024-11-23 22:56:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2020. [2024-11-23 22:56:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1612 states have (on average 1.6358560794044665) internal successors, (2637), 1609 states have internal predecessors, (2637), 354 states have call successors, (354), 46 states have call predecessors, (354), 53 states have return successors, (468), 364 states have call predecessors, (468), 353 states have call successors, (468) [2024-11-23 22:56:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3459 transitions. [2024-11-23 22:56:23,138 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3459 transitions. Word has length 110 [2024-11-23 22:56:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:23,139 INFO L471 AbstractCegarLoop]: Abstraction has 2020 states and 3459 transitions. [2024-11-23 22:56:23,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:56:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3459 transitions. [2024-11-23 22:56:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:56:23,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:23,153 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:56:23,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 22:56:23,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:23,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:23,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1021098246, now seen corresponding path program 1 times [2024-11-23 22:56:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870765235] [2024-11-23 22:56:23,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-23 22:56:23,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870765235] [2024-11-23 22:56:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870765235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:23,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:23,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:56:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157890665] [2024-11-23 22:56:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:23,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:56:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:23,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:56:23,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:56:23,558 INFO L87 Difference]: Start difference. First operand 2020 states and 3459 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:56:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:23,856 INFO L93 Difference]: Finished difference Result 3993 states and 6856 transitions. [2024-11-23 22:56:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:56:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2024-11-23 22:56:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:23,875 INFO L225 Difference]: With dead ends: 3993 [2024-11-23 22:56:23,875 INFO L226 Difference]: Without dead ends: 2024 [2024-11-23 22:56:23,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:56:23,884 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 5 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:23,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2848 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:56:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2024-11-23 22:56:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2024-11-23 22:56:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1612 states have (on average 1.6358560794044665) internal successors, (2637), 1609 states have internal predecessors, (2637), 354 states have call successors, (354), 46 states have call predecessors, (354), 53 states have return successors, (466), 364 states have call predecessors, (466), 353 states have call successors, (466) [2024-11-23 22:56:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3457 transitions. [2024-11-23 22:56:24,029 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3457 transitions. Word has length 112 [2024-11-23 22:56:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:24,031 INFO L471 AbstractCegarLoop]: Abstraction has 2020 states and 3457 transitions. [2024-11-23 22:56:24,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-23 22:56:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3457 transitions. [2024-11-23 22:56:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 22:56:24,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:24,044 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:24,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:56:24,044 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:24,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash -105198824, now seen corresponding path program 1 times [2024-11-23 22:56:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995790472] [2024-11-23 22:56:24,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:24,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995790472] [2024-11-23 22:56:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995790472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174365221] [2024-11-23 22:56:24,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:24,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:24,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:24,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:24,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:56:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:24,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:24,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 22:56:24,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174365221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845751707] [2024-11-23 22:56:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:24,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:24,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:24,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:24,609 INFO L87 Difference]: Start difference. First operand 2020 states and 3457 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:24,772 INFO L93 Difference]: Finished difference Result 4863 states and 8441 transitions. [2024-11-23 22:56:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2024-11-23 22:56:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:24,795 INFO L225 Difference]: With dead ends: 4863 [2024-11-23 22:56:24,795 INFO L226 Difference]: Without dead ends: 2992 [2024-11-23 22:56:24,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:24,804 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 105 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:24,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 857 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-11-23 22:56:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2982. [2024-11-23 22:56:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2368 states have (on average 1.6372466216216217) internal successors, (3877), 2353 states have internal predecessors, (3877), 560 states have call successors, (560), 46 states have call predecessors, (560), 53 states have return successors, (740), 582 states have call predecessors, (740), 559 states have call successors, (740) [2024-11-23 22:56:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5177 transitions. [2024-11-23 22:56:25,061 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5177 transitions. Word has length 115 [2024-11-23 22:56:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:25,062 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 5177 transitions. [2024-11-23 22:56:25,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5177 transitions. [2024-11-23 22:56:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 22:56:25,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:25,081 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:25,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 22:56:25,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 22:56:25,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:25,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 826182240, now seen corresponding path program 1 times [2024-11-23 22:56:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547178367] [2024-11-23 22:56:25,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 22:56:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547178367] [2024-11-23 22:56:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547178367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:56:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467557002] [2024-11-23 22:56:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:25,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:25,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:25,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:25,370 INFO L87 Difference]: Start difference. First operand 2982 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:25,582 INFO L93 Difference]: Finished difference Result 7639 states and 13353 transitions. [2024-11-23 22:56:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:25,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-23 22:56:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:25,619 INFO L225 Difference]: With dead ends: 7639 [2024-11-23 22:56:25,620 INFO L226 Difference]: Without dead ends: 4916 [2024-11-23 22:56:25,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:25,634 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 103 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:25,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 844 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2024-11-23 22:56:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4906. [2024-11-23 22:56:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 3912 states have (on average 1.6423824130879345) internal successors, (6425), 3897 states have internal predecessors, (6425), 940 states have call successors, (940), 46 states have call predecessors, (940), 53 states have return successors, (1184), 962 states have call predecessors, (1184), 939 states have call successors, (1184) [2024-11-23 22:56:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 8549 transitions. [2024-11-23 22:56:25,999 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 8549 transitions. Word has length 114 [2024-11-23 22:56:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:25,999 INFO L471 AbstractCegarLoop]: Abstraction has 4906 states and 8549 transitions. [2024-11-23 22:56:25,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 8549 transitions. [2024-11-23 22:56:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 22:56:26,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:26,032 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:26,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:56:26,032 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:26,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash -179785053, now seen corresponding path program 1 times [2024-11-23 22:56:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:26,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52956227] [2024-11-23 22:56:26,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 22:56:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52956227] [2024-11-23 22:56:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52956227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:56:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199586383] [2024-11-23 22:56:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:26,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:26,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:26,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:26,135 INFO L87 Difference]: Start difference. First operand 4906 states and 8549 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:26,403 INFO L93 Difference]: Finished difference Result 11659 states and 20491 transitions. [2024-11-23 22:56:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:26,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2024-11-23 22:56:26,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:26,545 INFO L225 Difference]: With dead ends: 11659 [2024-11-23 22:56:26,545 INFO L226 Difference]: Without dead ends: 7480 [2024-11-23 22:56:26,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:26,562 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 101 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:26,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 839 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2024-11-23 22:56:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 7470. [2024-11-23 22:56:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7470 states, 6044 states have (on average 1.6434480476505626) internal successors, (9933), 6011 states have internal predecessors, (9933), 1372 states have call successors, (1372), 46 states have call predecessors, (1372), 53 states have return successors, (1766), 1412 states have call predecessors, (1766), 1371 states have call successors, (1766) [2024-11-23 22:56:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 13071 transitions. [2024-11-23 22:56:27,150 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 13071 transitions. Word has length 115 [2024-11-23 22:56:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:27,152 INFO L471 AbstractCegarLoop]: Abstraction has 7470 states and 13071 transitions. [2024-11-23 22:56:27,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 13071 transitions. [2024-11-23 22:56:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 22:56:27,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:27,187 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:27,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:56:27,188 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:27,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1025596481, now seen corresponding path program 1 times [2024-11-23 22:56:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:27,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157641189] [2024-11-23 22:56:27,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 22:56:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157641189] [2024-11-23 22:56:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157641189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:27,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:56:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84110964] [2024-11-23 22:56:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:27,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:27,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:27,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:27,292 INFO L87 Difference]: Start difference. First operand 7470 states and 13071 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:27,761 INFO L93 Difference]: Finished difference Result 17803 states and 31427 transitions. [2024-11-23 22:56:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:27,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2024-11-23 22:56:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:27,831 INFO L225 Difference]: With dead ends: 17803 [2024-11-23 22:56:27,832 INFO L226 Difference]: Without dead ends: 11628 [2024-11-23 22:56:27,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:27,856 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 99 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:27,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 839 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11628 states. [2024-11-23 22:56:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11628 to 11618. [2024-11-23 22:56:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 9552 states have (on average 1.64499581239531) internal successors, (15713), 9495 states have internal predecessors, (15713), 2012 states have call successors, (2012), 46 states have call predecessors, (2012), 53 states have return successors, (2662), 2076 states have call predecessors, (2662), 2011 states have call successors, (2662) [2024-11-23 22:56:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 20387 transitions. [2024-11-23 22:56:28,568 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 20387 transitions. Word has length 116 [2024-11-23 22:56:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:28,569 INFO L471 AbstractCegarLoop]: Abstraction has 11618 states and 20387 transitions. [2024-11-23 22:56:28,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 20387 transitions. [2024-11-23 22:56:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 22:56:28,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:28,616 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:28,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:56:28,616 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1365919182, now seen corresponding path program 1 times [2024-11-23 22:56:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013393624] [2024-11-23 22:56:28,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:28,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013393624] [2024-11-23 22:56:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013393624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681487760] [2024-11-23 22:56:28,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:28,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:28,744 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:28,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:56:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:29,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:29,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 22:56:29,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681487760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250941152] [2024-11-23 22:56:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:29,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:29,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:29,141 INFO L87 Difference]: Start difference. First operand 11618 states and 20387 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:30,088 INFO L93 Difference]: Finished difference Result 29055 states and 51305 transitions. [2024-11-23 22:56:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2024-11-23 22:56:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:30,220 INFO L225 Difference]: With dead ends: 29055 [2024-11-23 22:56:30,221 INFO L226 Difference]: Without dead ends: 19340 [2024-11-23 22:56:30,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:30,297 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 97 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:30,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 856 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19340 states. [2024-11-23 22:56:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19340 to 19330. [2024-11-23 22:56:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19330 states, 15882 states have (on average 1.6363808084624103) internal successors, (25989), 15795 states have internal predecessors, (25989), 3394 states have call successors, (3394), 46 states have call predecessors, (3394), 53 states have return successors, (4502), 3488 states have call predecessors, (4502), 3393 states have call successors, (4502) [2024-11-23 22:56:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19330 states to 19330 states and 33885 transitions. [2024-11-23 22:56:31,671 INFO L78 Accepts]: Start accepts. Automaton has 19330 states and 33885 transitions. Word has length 119 [2024-11-23 22:56:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:31,672 INFO L471 AbstractCegarLoop]: Abstraction has 19330 states and 33885 transitions. [2024-11-23 22:56:31,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19330 states and 33885 transitions. [2024-11-23 22:56:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:56:31,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:31,728 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:31,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 22:56:31,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:31,932 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:31,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash -150947468, now seen corresponding path program 1 times [2024-11-23 22:56:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263141604] [2024-11-23 22:56:31,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:32,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:32,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263141604] [2024-11-23 22:56:32,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263141604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:32,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028204158] [2024-11-23 22:56:32,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:32,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:32,066 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:56:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:32,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:32,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 22:56:32,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:32,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028204158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:32,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:32,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79756598] [2024-11-23 22:56:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:32,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:32,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:32,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:32,480 INFO L87 Difference]: Start difference. First operand 19330 states and 33885 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:33,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:33,769 INFO L93 Difference]: Finished difference Result 50147 states and 88189 transitions. [2024-11-23 22:56:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:33,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2024-11-23 22:56:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:34,003 INFO L225 Difference]: With dead ends: 50147 [2024-11-23 22:56:34,004 INFO L226 Difference]: Without dead ends: 33696 [2024-11-23 22:56:34,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:34,081 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 95 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:34,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 844 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33696 states. [2024-11-23 22:56:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33696 to 33686. [2024-11-23 22:56:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33686 states, 27814 states have (on average 1.633314158337528) internal successors, (45429), 27727 states have internal predecessors, (45429), 5818 states have call successors, (5818), 46 states have call predecessors, (5818), 53 states have return successors, (7526), 5912 states have call predecessors, (7526), 5817 states have call successors, (7526) [2024-11-23 22:56:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33686 states to 33686 states and 58773 transitions. [2024-11-23 22:56:36,558 INFO L78 Accepts]: Start accepts. Automaton has 33686 states and 58773 transitions. Word has length 120 [2024-11-23 22:56:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:36,559 INFO L471 AbstractCegarLoop]: Abstraction has 33686 states and 58773 transitions. [2024-11-23 22:56:36,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 33686 states and 58773 transitions. [2024-11-23 22:56:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 22:56:36,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:36,619 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:36,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 22:56:36,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:36,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:36,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1118288148, now seen corresponding path program 1 times [2024-11-23 22:56:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:36,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70033830] [2024-11-23 22:56:36,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:36,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70033830] [2024-11-23 22:56:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70033830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718055932] [2024-11-23 22:56:36,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:36,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:36,932 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:36,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:56:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:37,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:37,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 22:56:37,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718055932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837764657] [2024-11-23 22:56:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:37,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:37,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:37,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:37,319 INFO L87 Difference]: Start difference. First operand 33686 states and 58773 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:39,596 INFO L93 Difference]: Finished difference Result 89215 states and 156237 transitions. [2024-11-23 22:56:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2024-11-23 22:56:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:39,929 INFO L225 Difference]: With dead ends: 89215 [2024-11-23 22:56:39,929 INFO L226 Difference]: Without dead ends: 60064 [2024-11-23 22:56:40,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:40,018 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 93 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:40,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 860 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60064 states. [2024-11-23 22:56:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60064 to 60054. [2024-11-23 22:56:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 49520 states have (on average 1.6227180936995154) internal successors, (80357), 49397 states have internal predecessors, (80357), 10480 states have call successors, (10480), 46 states have call predecessors, (10480), 53 states have return successors, (13564), 10610 states have call predecessors, (13564), 10479 states have call successors, (13564) [2024-11-23 22:56:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 104401 transitions. [2024-11-23 22:56:43,692 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 104401 transitions. Word has length 121 [2024-11-23 22:56:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:43,693 INFO L471 AbstractCegarLoop]: Abstraction has 60054 states and 104401 transitions. [2024-11-23 22:56:43,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 104401 transitions. [2024-11-23 22:56:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:56:43,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:43,820 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:43,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 22:56:44,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 22:56:44,021 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:44,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -631635814, now seen corresponding path program 1 times [2024-11-23 22:56:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:44,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163196896] [2024-11-23 22:56:44,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:44,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 22:56:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163196896] [2024-11-23 22:56:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163196896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:44,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:44,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:56:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598144530] [2024-11-23 22:56:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:44,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:44,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:44,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:44,097 INFO L87 Difference]: Start difference. First operand 60054 states and 104401 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:47,197 INFO L93 Difference]: Finished difference Result 162461 states and 283685 transitions. [2024-11-23 22:56:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2024-11-23 22:56:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:47,905 INFO L225 Difference]: With dead ends: 162461 [2024-11-23 22:56:47,905 INFO L226 Difference]: Without dead ends: 108570 [2024-11-23 22:56:48,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:56:48,108 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 91 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:48,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 842 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:56:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108570 states. [2024-11-23 22:56:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108570 to 108560. [2024-11-23 22:56:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108560 states, 90034 states have (on average 1.6175333762800719) internal successors, (145633), 89869 states have internal predecessors, (145633), 18472 states have call successors, (18472), 46 states have call predecessors, (18472), 53 states have return successors, (24222), 18644 states have call predecessors, (24222), 18471 states have call successors, (24222) [2024-11-23 22:56:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108560 states to 108560 states and 188327 transitions. [2024-11-23 22:56:53,254 INFO L78 Accepts]: Start accepts. Automaton has 108560 states and 188327 transitions. Word has length 120 [2024-11-23 22:56:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:53,254 INFO L471 AbstractCegarLoop]: Abstraction has 108560 states and 188327 transitions. [2024-11-23 22:56:53,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 108560 states and 188327 transitions. [2024-11-23 22:56:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:56:53,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:53,338 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:53,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:56:53,339 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:53,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1266904150, now seen corresponding path program 1 times [2024-11-23 22:56:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961730499] [2024-11-23 22:56:53,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:53,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:56:53,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961730499] [2024-11-23 22:56:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961730499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909105534] [2024-11-23 22:56:53,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:53,474 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:53,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba45a31-949b-472f-b1a3-9e74193b03f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:56:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:53,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:56:53,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 22:56:53,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:56:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909105534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:53,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:56:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:56:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124841201] [2024-11-23 22:56:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:53,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:56:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:53,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:56:53,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:56:53,882 INFO L87 Difference]: Start difference. First operand 108560 states and 188327 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:56:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:59,575 INFO L93 Difference]: Finished difference Result 301051 states and 521937 transitions. [2024-11-23 22:56:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:56:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2024-11-23 22:56:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:00,635 INFO L225 Difference]: With dead ends: 301051 [2024-11-23 22:57:00,635 INFO L226 Difference]: Without dead ends: 201646 [2024-11-23 22:57:00,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:57:00,920 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 89 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:00,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 842 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:57:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201646 states.