./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1 --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 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:40:55,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:40:55,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:40:55,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:40:55,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:40:55,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:40:55,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:40:55,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:40:55,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:40:55,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:40:55,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:40:55,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:40:55,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:40:55,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:40:55,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:40:55,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:40:55,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:40:55,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:40:55,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:40:55,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:40:55,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:40:55,597 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_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f [2024-12-02 13:40:55,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:40:55,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:40:55,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:40:55,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:40:55,852 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:40:55,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2024-12-02 13:40:58,472 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/data/a4b63757a/b72622cb4521491a9a03e5a728751ad3/FLAG130ad682b [2024-12-02 13:40:58,769 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:40:58,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2024-12-02 13:40:58,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/data/a4b63757a/b72622cb4521491a9a03e5a728751ad3/FLAG130ad682b [2024-12-02 13:40:59,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/data/a4b63757a/b72622cb4521491a9a03e5a728751ad3 [2024-12-02 13:40:59,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:40:59,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:40:59,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:40:59,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:40:59,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:40:59,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59, skipping insertion in model container [2024-12-02 13:40:59,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:40:59,448 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_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2024-12-02 13:40:59,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:40:59,521 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:40:59,528 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-12-02 13:40:59,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1128] [2024-12-02 13:40:59,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1449] [2024-12-02 13:40:59,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1484] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1632] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1998] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2015] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2024] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2429] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2448] [2024-12-02 13:40:59,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2845] [2024-12-02 13:40:59,591 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_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2024-12-02 13:40:59,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:40:59,639 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:40:59,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59 WrapperNode [2024-12-02 13:40:59,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:40:59,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:40:59,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:40:59,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:40:59,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,701 INFO L138 Inliner]: procedures = 134, calls = 218, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 978 [2024-12-02 13:40:59,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:40:59,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:40:59,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:40:59,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:40:59,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,742 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]. [2024-12-02 13:40:59,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,758 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:40:59,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:40:59,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:40:59,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:40:59,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (1/1) ... [2024-12-02 13:40:59,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:40:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:59,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:40:59,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:40:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 13:40:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 13:40:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2024-12-02 13:40:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2024-12-02 13:40:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 13:40:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 13:40:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2024-12-02 13:40:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2024-12-02 13:40:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 13:40:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 13:40:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 13:40:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 13:40:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2024-12-02 13:40:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2024-12-02 13:40:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 13:40:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 13:40:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 13:40:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 13:40:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 13:40:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 13:40:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 13:40:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2024-12-02 13:40:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2024-12-02 13:40:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:40:59,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:41:00,022 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:41:00,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:41:00,927 INFO L? ?]: Removed 536 outVars from TransFormulas that were not future-live. [2024-12-02 13:41:00,927 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:41:00,944 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:41:00,944 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:41:00,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:41:00 BoogieIcfgContainer [2024-12-02 13:41:00,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:41:00,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:41:00,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:41:00,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:41:00,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:40:59" (1/3) ... [2024-12-02 13:41:00,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a33b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:41:00, skipping insertion in model container [2024-12-02 13:41:00,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:40:59" (2/3) ... [2024-12-02 13:41:00,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a33b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:41:00, skipping insertion in model container [2024-12-02 13:41:00,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:41:00" (3/3) ... [2024-12-02 13:41:00,954 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.c [2024-12-02 13:41:00,969 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:41:00,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec11_product32.cil.c that has 29 procedures, 421 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:41:01,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:41:01,042 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;@2885ca03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:41:01,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:41:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 421 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 13:41:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 13:41:01,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:01,067 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:01,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:01,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1834139494, now seen corresponding path program 1 times [2024-12-02 13:41:01,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218071733] [2024-12-02 13:41:01,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 13:41:01,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:01,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218071733] [2024-12-02 13:41:01,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218071733] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:01,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422086645] [2024-12-02 13:41:01,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:01,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:01,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:41:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:02,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:41:02,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 13:41:02,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422086645] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 13:41:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405986034] [2024-12-02 13:41:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:02,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:41:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:02,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:41:02,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:41:02,154 INFO L87 Difference]: Start difference. First operand has 421 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:02,216 INFO L93 Difference]: Finished difference Result 650 states and 963 transitions. [2024-12-02 13:41:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:41:02,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 148 [2024-12-02 13:41:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:02,232 INFO L225 Difference]: With dead ends: 650 [2024-12-02 13:41:02,232 INFO L226 Difference]: Without dead ends: 414 [2024-12-02 13:41:02,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:41:02,239 INFO L435 NwaCegarLoop]: 632 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, 632 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 [2024-12-02 13:41:02,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-12-02 13:41:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-12-02 13:41:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 321 states have (on average 1.5482866043613708) internal successors, (497), 325 states have internal predecessors, (497), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 13:41:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 624 transitions. [2024-12-02 13:41:02,309 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 624 transitions. Word has length 148 [2024-12-02 13:41:02,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:02,311 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 624 transitions. [2024-12-02 13:41:02,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 624 transitions. [2024-12-02 13:41:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 13:41:02,318 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:02,318 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:02,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:41:02,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:02,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash 496403231, now seen corresponding path program 1 times [2024-12-02 13:41:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863597300] [2024-12-02 13:41:02,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 13:41:02,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:02,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863597300] [2024-12-02 13:41:02,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863597300] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:02,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805219710] [2024-12-02 13:41:02,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:02,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:02,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:02,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:02,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:41:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:03,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:41:03,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 13:41:03,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805219710] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 13:41:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491615465] [2024-12-02 13:41:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:03,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:03,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:03,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:41:03,357 INFO L87 Difference]: Start difference. First operand 414 states and 624 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:03,401 INFO L93 Difference]: Finished difference Result 639 states and 940 transitions. [2024-12-02 13:41:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:03,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 167 [2024-12-02 13:41:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:03,406 INFO L225 Difference]: With dead ends: 639 [2024-12-02 13:41:03,406 INFO L226 Difference]: Without dead ends: 416 [2024-12-02 13:41:03,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:41:03,408 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 1 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1242 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 [2024-12-02 13:41:03,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-12-02 13:41:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 415. [2024-12-02 13:41:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 322 states have (on average 1.546583850931677) internal successors, (498), 326 states have internal predecessors, (498), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 13:41:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 625 transitions. [2024-12-02 13:41:03,438 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 625 transitions. Word has length 167 [2024-12-02 13:41:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:03,438 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 625 transitions. [2024-12-02 13:41:03,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 625 transitions. [2024-12-02 13:41:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:41:03,443 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:03,443 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:03,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:41:03,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:03,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:03,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -300685716, now seen corresponding path program 1 times [2024-12-02 13:41:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109560544] [2024-12-02 13:41:03,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 13:41:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109560544] [2024-12-02 13:41:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109560544] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247337288] [2024-12-02 13:41:03,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:03,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:03,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:03,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:41:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:04,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:41:04,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 13:41:04,351 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:04,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247337288] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:04,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:04,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 13:41:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583932691] [2024-12-02 13:41:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:04,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:04,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:04,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:41:04,353 INFO L87 Difference]: Start difference. First operand 415 states and 625 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:04,390 INFO L93 Difference]: Finished difference Result 878 states and 1342 transitions. [2024-12-02 13:41:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 175 [2024-12-02 13:41:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:04,394 INFO L225 Difference]: With dead ends: 878 [2024-12-02 13:41:04,394 INFO L226 Difference]: Without dead ends: 489 [2024-12-02 13:41:04,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:41:04,396 INFO L435 NwaCegarLoop]: 632 mSDtfsCounter, 134 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1209 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 [2024-12-02 13:41:04,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1209 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-12-02 13:41:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 481. [2024-12-02 13:41:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 374 states have (on average 1.5668449197860963) internal successors, (586), 378 states have internal predecessors, (586), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2024-12-02 13:41:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 741 transitions. [2024-12-02 13:41:04,423 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 741 transitions. Word has length 175 [2024-12-02 13:41:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:04,424 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 741 transitions. [2024-12-02 13:41:04,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 741 transitions. [2024-12-02 13:41:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:41:04,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:04,428 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:04,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:41:04,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:04,629 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:04,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash 597677756, now seen corresponding path program 1 times [2024-12-02 13:41:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842759937] [2024-12-02 13:41:04,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 13:41:04,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:04,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842759937] [2024-12-02 13:41:04,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842759937] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:04,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368460168] [2024-12-02 13:41:04,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:04,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:04,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:04,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:41:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:05,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:41:05,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 13:41:05,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368460168] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:05,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:05,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 13:41:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960676795] [2024-12-02 13:41:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:05,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:05,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:05,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:05,279 INFO L87 Difference]: Start difference. First operand 481 states and 741 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:05,350 INFO L93 Difference]: Finished difference Result 953 states and 1472 transitions. [2024-12-02 13:41:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:05,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 176 [2024-12-02 13:41:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:05,354 INFO L225 Difference]: With dead ends: 953 [2024-12-02 13:41:05,354 INFO L226 Difference]: Without dead ends: 483 [2024-12-02 13:41:05,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:05,356 INFO L435 NwaCegarLoop]: 616 mSDtfsCounter, 2 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2453 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 [2024-12-02 13:41:05,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2453 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-12-02 13:41:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2024-12-02 13:41:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 375 states have (on average 1.5653333333333332) internal successors, (587), 380 states have internal predecessors, (587), 78 states have call successors, (78), 28 states have call predecessors, (78), 29 states have return successors, (79), 76 states have call predecessors, (79), 77 states have call successors, (79) [2024-12-02 13:41:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 744 transitions. [2024-12-02 13:41:05,379 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 744 transitions. Word has length 176 [2024-12-02 13:41:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:05,379 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 744 transitions. [2024-12-02 13:41:05,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 744 transitions. [2024-12-02 13:41:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 13:41:05,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:05,383 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:05,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 13:41:05,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:05,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:05,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1633079776, now seen corresponding path program 1 times [2024-12-02 13:41:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620919] [2024-12-02 13:41:05,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 13:41:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620919] [2024-12-02 13:41:05,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620919] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984387494] [2024-12-02 13:41:05,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:05,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:05,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:05,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:05,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:41:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:06,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:41:06,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 13:41:06,173 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984387494] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 13:41:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320075399] [2024-12-02 13:41:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:06,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:06,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:06,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:41:06,175 INFO L87 Difference]: Start difference. First operand 483 states and 744 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:06,242 INFO L93 Difference]: Finished difference Result 955 states and 1477 transitions. [2024-12-02 13:41:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 177 [2024-12-02 13:41:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:06,246 INFO L225 Difference]: With dead ends: 955 [2024-12-02 13:41:06,246 INFO L226 Difference]: Without dead ends: 485 [2024-12-02 13:41:06,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:41:06,248 INFO L435 NwaCegarLoop]: 614 mSDtfsCounter, 2 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:06,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2439 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-12-02 13:41:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2024-12-02 13:41:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 376 states have (on average 1.5638297872340425) internal successors, (588), 382 states have internal predecessors, (588), 78 states have call successors, (78), 28 states have call predecessors, (78), 30 states have return successors, (84), 76 states have call predecessors, (84), 77 states have call successors, (84) [2024-12-02 13:41:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 750 transitions. [2024-12-02 13:41:06,272 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 750 transitions. Word has length 177 [2024-12-02 13:41:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:06,273 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 750 transitions. [2024-12-02 13:41:06,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 750 transitions. [2024-12-02 13:41:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 13:41:06,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:06,276 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:06,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:41:06,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:06,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:06,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash -940279999, now seen corresponding path program 1 times [2024-12-02 13:41:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24914262] [2024-12-02 13:41:06,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:06,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 13:41:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24914262] [2024-12-02 13:41:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24914262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:41:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809196799] [2024-12-02 13:41:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:06,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:06,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:06,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:41:06,701 INFO L87 Difference]: Start difference. First operand 485 states and 750 transitions. Second operand has 5 states, 4 states have (on average 25.5) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:06,755 INFO L93 Difference]: Finished difference Result 947 states and 1468 transitions. [2024-12-02 13:41:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.5) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 178 [2024-12-02 13:41:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:06,760 INFO L225 Difference]: With dead ends: 947 [2024-12-02 13:41:06,760 INFO L226 Difference]: Without dead ends: 485 [2024-12-02 13:41:06,761 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 [2024-12-02 13:41:06,762 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 2 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2457 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 [2024-12-02 13:41:06,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2457 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-12-02 13:41:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2024-12-02 13:41:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 376 states have (on average 1.5638297872340425) internal successors, (588), 382 states have internal predecessors, (588), 78 states have call successors, (78), 28 states have call predecessors, (78), 30 states have return successors, (83), 76 states have call predecessors, (83), 77 states have call successors, (83) [2024-12-02 13:41:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 749 transitions. [2024-12-02 13:41:06,786 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 749 transitions. Word has length 178 [2024-12-02 13:41:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:06,786 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 749 transitions. [2024-12-02 13:41:06,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.5) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 749 transitions. [2024-12-02 13:41:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 13:41:06,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:06,790 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:06,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:41:06,790 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:06,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1574022969, now seen corresponding path program 2 times [2024-12-02 13:41:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:06,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798025310] [2024-12-02 13:41:06,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:41:06,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:06,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:41:06,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:41:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 13:41:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798025310] [2024-12-02 13:41:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798025310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:06,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:06,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:41:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719052315] [2024-12-02 13:41:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:06,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:41:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:06,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:41:06,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:06,979 INFO L87 Difference]: Start difference. First operand 485 states and 749 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:07,435 INFO L93 Difference]: Finished difference Result 1121 states and 1740 transitions. [2024-12-02 13:41:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:41:07,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 179 [2024-12-02 13:41:07,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:07,440 INFO L225 Difference]: With dead ends: 1121 [2024-12-02 13:41:07,440 INFO L226 Difference]: Without dead ends: 904 [2024-12-02 13:41:07,441 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 [2024-12-02 13:41:07,442 INFO L435 NwaCegarLoop]: 653 mSDtfsCounter, 679 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:07,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 4019 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:41:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2024-12-02 13:41:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 852. [2024-12-02 13:41:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 668 states have (on average 1.597305389221557) internal successors, (1067), 676 states have internal predecessors, (1067), 133 states have call successors, (133), 50 states have call predecessors, (133), 50 states have return successors, (148), 128 states have call predecessors, (148), 132 states have call successors, (148) [2024-12-02 13:41:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1348 transitions. [2024-12-02 13:41:07,477 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1348 transitions. Word has length 179 [2024-12-02 13:41:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:07,477 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1348 transitions. [2024-12-02 13:41:07,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 13:41:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1348 transitions. [2024-12-02 13:41:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 13:41:07,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:07,481 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:07,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:41:07,481 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:07,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2103645201, now seen corresponding path program 1 times [2024-12-02 13:41:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146511067] [2024-12-02 13:41:07,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:07,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:41:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:07,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146511067] [2024-12-02 13:41:07,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146511067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:07,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:41:07,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850588857] [2024-12-02 13:41:07,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:07,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:07,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:07,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:07,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:41:07,618 INFO L87 Difference]: Start difference. First operand 852 states and 1348 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 13:41:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:07,689 INFO L93 Difference]: Finished difference Result 1673 states and 2656 transitions. [2024-12-02 13:41:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2024-12-02 13:41:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:07,695 INFO L225 Difference]: With dead ends: 1673 [2024-12-02 13:41:07,695 INFO L226 Difference]: Without dead ends: 856 [2024-12-02 13:41:07,697 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 [2024-12-02 13:41:07,698 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 1 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2460 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 [2024-12-02 13:41:07,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2460 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-12-02 13:41:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2024-12-02 13:41:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 670 states have (on average 1.5955223880597016) internal successors, (1069), 680 states have internal predecessors, (1069), 133 states have call successors, (133), 50 states have call predecessors, (133), 52 states have return successors, (151), 128 states have call predecessors, (151), 132 states have call successors, (151) [2024-12-02 13:41:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1353 transitions. [2024-12-02 13:41:07,727 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1353 transitions. Word has length 161 [2024-12-02 13:41:07,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:07,727 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1353 transitions. [2024-12-02 13:41:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 13:41:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1353 transitions. [2024-12-02 13:41:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 13:41:07,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:07,730 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:07,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:41:07,731 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:07,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash -167527227, now seen corresponding path program 1 times [2024-12-02 13:41:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943719196] [2024-12-02 13:41:07,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 13:41:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943719196] [2024-12-02 13:41:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943719196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:41:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94521022] [2024-12-02 13:41:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:41:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:07,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:41:07,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:07,884 INFO L87 Difference]: Start difference. First operand 856 states and 1353 transitions. Second operand has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 13:41:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:08,028 INFO L93 Difference]: Finished difference Result 1672 states and 2649 transitions. [2024-12-02 13:41:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:41:08,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 181 [2024-12-02 13:41:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:08,033 INFO L225 Difference]: With dead ends: 1672 [2024-12-02 13:41:08,033 INFO L226 Difference]: Without dead ends: 860 [2024-12-02 13:41:08,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:41:08,036 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 7 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4227 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 [2024-12-02 13:41:08,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4227 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:41:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-12-02 13:41:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 858. [2024-12-02 13:41:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 672 states have (on average 1.59375) internal successors, (1071), 681 states have internal predecessors, (1071), 133 states have call successors, (133), 51 states have call predecessors, (133), 52 states have return successors, (149), 128 states have call predecessors, (149), 132 states have call successors, (149) [2024-12-02 13:41:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1353 transitions. [2024-12-02 13:41:08,064 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1353 transitions. Word has length 181 [2024-12-02 13:41:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:08,064 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1353 transitions. [2024-12-02 13:41:08,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 13:41:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1353 transitions. [2024-12-02 13:41:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 13:41:08,069 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:08,069 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:08,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:41:08,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:08,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1080907295, now seen corresponding path program 1 times [2024-12-02 13:41:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612877142] [2024-12-02 13:41:08,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:41:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612877142] [2024-12-02 13:41:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612877142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:41:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700815672] [2024-12-02 13:41:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:08,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:41:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:08,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:41:08,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:08,231 INFO L87 Difference]: Start difference. First operand 858 states and 1353 transitions. Second operand has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 13:41:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:08,390 INFO L93 Difference]: Finished difference Result 1685 states and 2668 transitions. [2024-12-02 13:41:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:41:08,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 163 [2024-12-02 13:41:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:08,395 INFO L225 Difference]: With dead ends: 1685 [2024-12-02 13:41:08,396 INFO L226 Difference]: Without dead ends: 868 [2024-12-02 13:41:08,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:41:08,398 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 5 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:08,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4241 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:41:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-12-02 13:41:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 866. [2024-12-02 13:41:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 678 states have (on average 1.5884955752212389) internal successors, (1077), 688 states have internal predecessors, (1077), 133 states have call successors, (133), 52 states have call predecessors, (133), 54 states have return successors, (156), 128 states have call predecessors, (156), 132 states have call successors, (156) [2024-12-02 13:41:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1366 transitions. [2024-12-02 13:41:08,440 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1366 transitions. Word has length 163 [2024-12-02 13:41:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:08,440 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1366 transitions. [2024-12-02 13:41:08,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 13:41:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1366 transitions. [2024-12-02 13:41:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 13:41:08,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:08,445 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:08,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:41:08,446 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 70810665, now seen corresponding path program 1 times [2024-12-02 13:41:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142127478] [2024-12-02 13:41:08,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 13:41:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142127478] [2024-12-02 13:41:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142127478] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55729834] [2024-12-02 13:41:08,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:08,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:08,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:41:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:08,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:41:08,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 13:41:08,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55729834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 13:41:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602774532] [2024-12-02 13:41:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:08,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:08,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:08,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:08,989 INFO L87 Difference]: Start difference. First operand 866 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:09,058 INFO L93 Difference]: Finished difference Result 1465 states and 2286 transitions. [2024-12-02 13:41:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2024-12-02 13:41:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:09,063 INFO L225 Difference]: With dead ends: 1465 [2024-12-02 13:41:09,063 INFO L226 Difference]: Without dead ends: 872 [2024-12-02 13:41:09,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:41:09,065 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 1 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:09,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2450 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-12-02 13:41:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 868. [2024-12-02 13:41:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 679 states have (on average 1.5876288659793814) internal successors, (1078), 690 states have internal predecessors, (1078), 133 states have call successors, (133), 52 states have call predecessors, (133), 55 states have return successors, (158), 128 states have call predecessors, (158), 132 states have call successors, (158) [2024-12-02 13:41:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1369 transitions. [2024-12-02 13:41:09,094 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1369 transitions. Word has length 184 [2024-12-02 13:41:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:09,095 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1369 transitions. [2024-12-02 13:41:09,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1369 transitions. [2024-12-02 13:41:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:41:09,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:09,098 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:09,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:41:09,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:09,298 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:09,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1500661722, now seen corresponding path program 1 times [2024-12-02 13:41:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681346589] [2024-12-02 13:41:09,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 13:41:09,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:09,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681346589] [2024-12-02 13:41:09,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681346589] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:09,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114144603] [2024-12-02 13:41:09,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:09,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:09,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:09,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:41:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:09,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:41:09,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 13:41:09,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:41:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 13:41:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114144603] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:41:09,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:41:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-12-02 13:41:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248060467] [2024-12-02 13:41:09,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:41:09,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:41:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:09,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:41:09,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:09,938 INFO L87 Difference]: Start difference. First operand 868 states and 1369 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 13:41:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:10,181 INFO L93 Difference]: Finished difference Result 2157 states and 3513 transitions. [2024-12-02 13:41:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:41:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 166 [2024-12-02 13:41:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:10,191 INFO L225 Difference]: With dead ends: 2157 [2024-12-02 13:41:10,191 INFO L226 Difference]: Without dead ends: 1554 [2024-12-02 13:41:10,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:41:10,194 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 492 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:10,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 4207 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:41:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2024-12-02 13:41:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1518. [2024-12-02 13:41:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1210 states have (on average 1.6421487603305784) internal successors, (1987), 1213 states have internal predecessors, (1987), 256 states have call successors, (256), 51 states have call predecessors, (256), 51 states have return successors, (295), 256 states have call predecessors, (295), 255 states have call successors, (295) [2024-12-02 13:41:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2538 transitions. [2024-12-02 13:41:10,263 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2538 transitions. Word has length 166 [2024-12-02 13:41:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:10,263 INFO L471 AbstractCegarLoop]: Abstraction has 1518 states and 2538 transitions. [2024-12-02 13:41:10,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 13:41:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2538 transitions. [2024-12-02 13:41:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 13:41:10,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:10,272 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:10,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:41:10,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:10,473 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:10,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash -383427711, now seen corresponding path program 1 times [2024-12-02 13:41:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837390629] [2024-12-02 13:41:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 13:41:10,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:10,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837390629] [2024-12-02 13:41:10,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837390629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:10,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:10,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:10,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608355296] [2024-12-02 13:41:10,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:10,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:10,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:10,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:10,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:10,550 INFO L87 Difference]: Start difference. First operand 1518 states and 2538 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:41:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:10,621 INFO L93 Difference]: Finished difference Result 3588 states and 6087 transitions. [2024-12-02 13:41:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2024-12-02 13:41:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:10,633 INFO L225 Difference]: With dead ends: 3588 [2024-12-02 13:41:10,634 INFO L226 Difference]: Without dead ends: 2153 [2024-12-02 13:41:10,638 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 [2024-12-02 13:41:10,639 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 132 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1248 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 [2024-12-02 13:41:10,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1248 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2024-12-02 13:41:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2143. [2024-12-02 13:41:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 1708 states have (on average 1.6528103044496487) internal successors, (2823), 1705 states have internal predecessors, (2823), 383 states have call successors, (383), 51 states have call predecessors, (383), 51 states have return successors, (445), 389 states have call predecessors, (445), 382 states have call successors, (445) [2024-12-02 13:41:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3651 transitions. [2024-12-02 13:41:10,738 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3651 transitions. Word has length 181 [2024-12-02 13:41:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:10,738 INFO L471 AbstractCegarLoop]: Abstraction has 2143 states and 3651 transitions. [2024-12-02 13:41:10,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:41:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3651 transitions. [2024-12-02 13:41:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 13:41:10,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:10,751 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:10,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:41:10,752 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:10,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1991599362, now seen corresponding path program 1 times [2024-12-02 13:41:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:10,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350099618] [2024-12-02 13:41:10,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 13:41:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350099618] [2024-12-02 13:41:10,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350099618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171746881] [2024-12-02 13:41:10,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:10,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:41:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:11,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:41:11,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 13:41:11,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171746881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:11,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 13:41:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886809165] [2024-12-02 13:41:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:11,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:11,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:11,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:11,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:11,393 INFO L87 Difference]: Start difference. First operand 2143 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:11,480 INFO L93 Difference]: Finished difference Result 5112 states and 8807 transitions. [2024-12-02 13:41:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:11,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 202 [2024-12-02 13:41:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:11,498 INFO L225 Difference]: With dead ends: 5112 [2024-12-02 13:41:11,498 INFO L226 Difference]: Without dead ends: 3135 [2024-12-02 13:41:11,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:11,505 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 126 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1237 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 [2024-12-02 13:41:11,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1237 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2024-12-02 13:41:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3125. [2024-12-02 13:41:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2523 states have (on average 1.6634958382877527) internal successors, (4197), 2511 states have internal predecessors, (4197), 550 states have call successors, (550), 51 states have call predecessors, (550), 51 states have return successors, (649), 565 states have call predecessors, (649), 549 states have call successors, (649) [2024-12-02 13:41:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 5396 transitions. [2024-12-02 13:41:11,644 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 5396 transitions. Word has length 202 [2024-12-02 13:41:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:11,645 INFO L471 AbstractCegarLoop]: Abstraction has 3125 states and 5396 transitions. [2024-12-02 13:41:11,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 5396 transitions. [2024-12-02 13:41:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 13:41:11,662 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:11,663 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:11,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:41:11,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 13:41:11,863 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:11,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash 255896777, now seen corresponding path program 1 times [2024-12-02 13:41:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:11,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963221042] [2024-12-02 13:41:11,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 13:41:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963221042] [2024-12-02 13:41:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963221042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:11,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:11,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:11,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171067337] [2024-12-02 13:41:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:11,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:11,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:11,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:11,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:11,937 INFO L87 Difference]: Start difference. First operand 3125 states and 5396 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:12,046 INFO L93 Difference]: Finished difference Result 8086 states and 14058 transitions. [2024-12-02 13:41:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2024-12-02 13:41:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:12,072 INFO L225 Difference]: With dead ends: 8086 [2024-12-02 13:41:12,072 INFO L226 Difference]: Without dead ends: 5099 [2024-12-02 13:41:12,081 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 [2024-12-02 13:41:12,082 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 130 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1240 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 [2024-12-02 13:41:12,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2024-12-02 13:41:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5089. [2024-12-02 13:41:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 4131 states have (on average 1.6712660372791093) internal successors, (6904), 4119 states have internal predecessors, (6904), 906 states have call successors, (906), 51 states have call predecessors, (906), 51 states have return successors, (1031), 921 states have call predecessors, (1031), 905 states have call successors, (1031) [2024-12-02 13:41:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 8841 transitions. [2024-12-02 13:41:12,401 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 8841 transitions. Word has length 170 [2024-12-02 13:41:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:12,401 INFO L471 AbstractCegarLoop]: Abstraction has 5089 states and 8841 transitions. [2024-12-02 13:41:12,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 8841 transitions. [2024-12-02 13:41:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 13:41:12,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:12,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:12,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:41:12,426 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:12,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 450008403, now seen corresponding path program 1 times [2024-12-02 13:41:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731205296] [2024-12-02 13:41:12,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 13:41:12,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731205296] [2024-12-02 13:41:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731205296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:12,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270686434] [2024-12-02 13:41:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:12,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:12,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:12,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:12,499 INFO L87 Difference]: Start difference. First operand 5089 states and 8841 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:12,691 INFO L93 Difference]: Finished difference Result 12326 states and 21590 transitions. [2024-12-02 13:41:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2024-12-02 13:41:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:12,730 INFO L225 Difference]: With dead ends: 12326 [2024-12-02 13:41:12,730 INFO L226 Difference]: Without dead ends: 7893 [2024-12-02 13:41:12,741 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 [2024-12-02 13:41:12,742 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 126 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1237 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 [2024-12-02 13:41:12,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1237 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7893 states. [2024-12-02 13:41:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7893 to 7883. [2024-12-02 13:41:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7883 states, 6485 states have (on average 1.676792598303778) internal successors, (10874), 6461 states have internal predecessors, (10874), 1346 states have call successors, (1346), 51 states have call predecessors, (1346), 51 states have return successors, (1550), 1373 states have call predecessors, (1550), 1345 states have call successors, (1550) [2024-12-02 13:41:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7883 states to 7883 states and 13770 transitions. [2024-12-02 13:41:13,043 INFO L78 Accepts]: Start accepts. Automaton has 7883 states and 13770 transitions. Word has length 190 [2024-12-02 13:41:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:13,043 INFO L471 AbstractCegarLoop]: Abstraction has 7883 states and 13770 transitions. [2024-12-02 13:41:13,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7883 states and 13770 transitions. [2024-12-02 13:41:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 13:41:13,078 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:13,078 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:13,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:41:13,078 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:13,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1772258007, now seen corresponding path program 1 times [2024-12-02 13:41:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301106832] [2024-12-02 13:41:13,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 13:41:13,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301106832] [2024-12-02 13:41:13,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301106832] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454982733] [2024-12-02 13:41:13,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:13,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:13,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:13,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:41:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:13,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:41:13,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 13:41:13,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:13,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454982733] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:13,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:13,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 13:41:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098701025] [2024-12-02 13:41:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:13,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:13,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:13,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:13,741 INFO L87 Difference]: Start difference. First operand 7883 states and 13770 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:41:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:13,956 INFO L93 Difference]: Finished difference Result 19986 states and 35119 transitions. [2024-12-02 13:41:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:13,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2024-12-02 13:41:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:14,011 INFO L225 Difference]: With dead ends: 19986 [2024-12-02 13:41:14,011 INFO L226 Difference]: Without dead ends: 13063 [2024-12-02 13:41:14,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:14,030 INFO L435 NwaCegarLoop]: 628 mSDtfsCounter, 122 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1247 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 [2024-12-02 13:41:14,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1247 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2024-12-02 13:41:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 13053. [2024-12-02 13:41:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13053 states, 10745 states have (on average 1.6736156351791531) internal successors, (17983), 10706 states have internal predecessors, (17983), 2256 states have call successors, (2256), 51 states have call predecessors, (2256), 51 states have return successors, (2599), 2298 states have call predecessors, (2599), 2255 states have call successors, (2599) [2024-12-02 13:41:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13053 states to 13053 states and 22838 transitions. [2024-12-02 13:41:14,560 INFO L78 Accepts]: Start accepts. Automaton has 13053 states and 22838 transitions. Word has length 185 [2024-12-02 13:41:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:14,560 INFO L471 AbstractCegarLoop]: Abstraction has 13053 states and 22838 transitions. [2024-12-02 13:41:14,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:41:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13053 states and 22838 transitions. [2024-12-02 13:41:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 13:41:14,621 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:14,621 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:14,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:41:14,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:41:14,822 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:14,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1534362924, now seen corresponding path program 1 times [2024-12-02 13:41:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653331543] [2024-12-02 13:41:14,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 13:41:15,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653331543] [2024-12-02 13:41:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653331543] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058939493] [2024-12-02 13:41:15,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:15,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:15,046 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:15,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:41:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:15,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:41:15,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 13:41:15,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058939493] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 13:41:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403086364] [2024-12-02 13:41:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:15,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:15,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:15,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:15,500 INFO L87 Difference]: Start difference. First operand 13053 states and 22838 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:15,995 INFO L93 Difference]: Finished difference Result 34438 states and 60535 transitions. [2024-12-02 13:41:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 205 [2024-12-02 13:41:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:16,097 INFO L225 Difference]: With dead ends: 34438 [2024-12-02 13:41:16,097 INFO L226 Difference]: Without dead ends: 22833 [2024-12-02 13:41:16,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:41:16,132 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 120 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1252 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 [2024-12-02 13:41:16,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1252 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22833 states. [2024-12-02 13:41:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22833 to 22823. [2024-12-02 13:41:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22823 states, 18871 states have (on average 1.674050129828838) internal successors, (31591), 18832 states have internal predecessors, (31591), 3900 states have call successors, (3900), 51 states have call predecessors, (3900), 51 states have return successors, (4432), 3942 states have call predecessors, (4432), 3899 states have call successors, (4432) [2024-12-02 13:41:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22823 states to 22823 states and 39923 transitions. [2024-12-02 13:41:16,999 INFO L78 Accepts]: Start accepts. Automaton has 22823 states and 39923 transitions. Word has length 205 [2024-12-02 13:41:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:16,999 INFO L471 AbstractCegarLoop]: Abstraction has 22823 states and 39923 transitions. [2024-12-02 13:41:16,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 22823 states and 39923 transitions. [2024-12-02 13:41:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 13:41:17,078 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:17,079 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:17,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 13:41:17,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:41:17,279 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:17,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2105996037, now seen corresponding path program 1 times [2024-12-02 13:41:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206561557] [2024-12-02 13:41:17,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 13:41:17,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206561557] [2024-12-02 13:41:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206561557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:17,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:17,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853307386] [2024-12-02 13:41:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:17,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:17,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:17,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:17,354 INFO L87 Difference]: Start difference. First operand 22823 states and 39923 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:18,209 INFO L93 Difference]: Finished difference Result 55808 states and 97551 transitions. [2024-12-02 13:41:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2024-12-02 13:41:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:18,319 INFO L225 Difference]: With dead ends: 55808 [2024-12-02 13:41:18,320 INFO L226 Difference]: Without dead ends: 36017 [2024-12-02 13:41:18,367 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 [2024-12-02 13:41:18,368 INFO L435 NwaCegarLoop]: 632 mSDtfsCounter, 120 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1222 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 [2024-12-02 13:41:18,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1222 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36017 states. [2024-12-02 13:41:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36017 to 36007. [2024-12-02 13:41:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36007 states, 29724 states have (on average 1.6503498856143184) internal successors, (49055), 29667 states have internal predecessors, (49055), 6231 states have call successors, (6231), 51 states have call predecessors, (6231), 51 states have return successors, (7182), 6291 states have call predecessors, (7182), 6230 states have call successors, (7182) [2024-12-02 13:41:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36007 states to 36007 states and 62468 transitions. [2024-12-02 13:41:19,474 INFO L78 Accepts]: Start accepts. Automaton has 36007 states and 62468 transitions. Word has length 193 [2024-12-02 13:41:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:19,475 INFO L471 AbstractCegarLoop]: Abstraction has 36007 states and 62468 transitions. [2024-12-02 13:41:19,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 36007 states and 62468 transitions. [2024-12-02 13:41:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:41:19,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:19,542 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:19,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:41:19,542 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:19,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1964050397, now seen corresponding path program 1 times [2024-12-02 13:41:19,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:19,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312200706] [2024-12-02 13:41:19,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:19,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 13:41:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312200706] [2024-12-02 13:41:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312200706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003235549] [2024-12-02 13:41:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:19,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:19,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:19,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:19,593 INFO L87 Difference]: Start difference. First operand 36007 states and 62468 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:20,725 INFO L93 Difference]: Finished difference Result 97255 states and 169329 transitions. [2024-12-02 13:41:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2024-12-02 13:41:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:21,002 INFO L225 Difference]: With dead ends: 97255 [2024-12-02 13:41:21,002 INFO L226 Difference]: Without dead ends: 65094 [2024-12-02 13:41:21,100 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 [2024-12-02 13:41:21,100 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 118 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1240 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 [2024-12-02 13:41:21,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1240 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65094 states. [2024-12-02 13:41:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65094 to 65084. [2024-12-02 13:41:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65084 states, 54001 states have (on average 1.6468028369845003) internal successors, (88929), 53923 states have internal predecessors, (88929), 11031 states have call successors, (11031), 51 states have call predecessors, (11031), 51 states have return successors, (12789), 11112 states have call predecessors, (12789), 11030 states have call successors, (12789) [2024-12-02 13:41:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65084 states to 65084 states and 112749 transitions. [2024-12-02 13:41:23,301 INFO L78 Accepts]: Start accepts. Automaton has 65084 states and 112749 transitions. Word has length 175 [2024-12-02 13:41:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:23,301 INFO L471 AbstractCegarLoop]: Abstraction has 65084 states and 112749 transitions. [2024-12-02 13:41:23,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 65084 states and 112749 transitions. [2024-12-02 13:41:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 13:41:23,419 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:23,419 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:23,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:41:23,419 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:23,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2142461643, now seen corresponding path program 1 times [2024-12-02 13:41:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:23,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762512103] [2024-12-02 13:41:23,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 13:41:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762512103] [2024-12-02 13:41:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762512103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920656833] [2024-12-02 13:41:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:23,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:23,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:23,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:23,473 INFO L87 Difference]: Start difference. First operand 65084 states and 112749 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:25,585 INFO L93 Difference]: Finished difference Result 180644 states and 313289 transitions. [2024-12-02 13:41:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:25,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2024-12-02 13:41:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:25,932 INFO L225 Difference]: With dead ends: 180644 [2024-12-02 13:41:25,932 INFO L226 Difference]: Without dead ends: 121208 [2024-12-02 13:41:26,040 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 [2024-12-02 13:41:26,041 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 116 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1242 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 [2024-12-02 13:41:26,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1242 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121208 states. [2024-12-02 13:41:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121208 to 121198. [2024-12-02 13:41:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121198 states, 101095 states have (on average 1.6420000989168604) internal successors, (165998), 101017 states have internal predecessors, (165998), 20051 states have call successors, (20051), 51 states have call predecessors, (20051), 51 states have return successors, (22873), 20132 states have call predecessors, (22873), 20050 states have call successors, (22873) [2024-12-02 13:41:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121198 states to 121198 states and 208922 transitions. [2024-12-02 13:41:29,973 INFO L78 Accepts]: Start accepts. Automaton has 121198 states and 208922 transitions. Word has length 195 [2024-12-02 13:41:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:29,973 INFO L471 AbstractCegarLoop]: Abstraction has 121198 states and 208922 transitions. [2024-12-02 13:41:29,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 13:41:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 121198 states and 208922 transitions. [2024-12-02 13:41:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 13:41:30,149 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:30,149 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:30,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:41:30,149 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:30,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1458482845, now seen corresponding path program 1 times [2024-12-02 13:41:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199505197] [2024-12-02 13:41:30,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 13:41:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199505197] [2024-12-02 13:41:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199505197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:30,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:41:30,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:41:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734185088] [2024-12-02 13:41:30,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:30,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:41:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:30,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:41:30,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:41:30,198 INFO L87 Difference]: Start difference. First operand 121198 states and 208922 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:34,081 INFO L93 Difference]: Finished difference Result 228347 states and 394398 transitions. [2024-12-02 13:41:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:41:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 177 [2024-12-02 13:41:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:34,746 INFO L225 Difference]: With dead ends: 228347 [2024-12-02 13:41:34,747 INFO L226 Difference]: Without dead ends: 228012 [2024-12-02 13:41:34,807 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 [2024-12-02 13:41:34,808 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 111 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:34,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1246 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:41:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228012 states. [2024-12-02 13:41:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228012 to 228002. [2024-12-02 13:41:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228002 states, 191287 states have (on average 1.63626383392494) internal successors, (312996), 191185 states have internal predecessors, (312996), 36663 states have call successors, (36663), 51 states have call predecessors, (36663), 51 states have return successors, (42092), 36768 states have call predecessors, (42092), 36662 states have call successors, (42092) [2024-12-02 13:41:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228002 states to 228002 states and 391751 transitions. [2024-12-02 13:41:41,554 INFO L78 Accepts]: Start accepts. Automaton has 228002 states and 391751 transitions. Word has length 177 [2024-12-02 13:41:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:41,554 INFO L471 AbstractCegarLoop]: Abstraction has 228002 states and 391751 transitions. [2024-12-02 13:41:41,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 13:41:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 228002 states and 391751 transitions. [2024-12-02 13:41:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 13:41:41,847 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:41,848 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:41,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:41:41,848 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:41,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2082218247, now seen corresponding path program 1 times [2024-12-02 13:41:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:41,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064127368] [2024-12-02 13:41:41,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 13:41:42,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:42,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064127368] [2024-12-02 13:41:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064127368] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:42,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346400786] [2024-12-02 13:41:42,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:42,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:42,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:41:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:42,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 13:41:42,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 13:41:42,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:41:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346400786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:41:42,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:41:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 13:41:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498606128] [2024-12-02 13:41:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:41:42,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:41:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:42,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:41:42,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:41:42,605 INFO L87 Difference]: Start difference. First operand 228002 states and 391751 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:41:47,433 INFO L93 Difference]: Finished difference Result 335805 states and 575666 transitions. [2024-12-02 13:41:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:41:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 210 [2024-12-02 13:41:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:41:48,353 INFO L225 Difference]: With dead ends: 335805 [2024-12-02 13:41:48,353 INFO L226 Difference]: Without dead ends: 224848 [2024-12-02 13:41:48,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:41:48,531 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 578 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:41:48,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1625 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:41:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224848 states. [2024-12-02 13:41:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224848 to 224848. [2024-12-02 13:41:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224848 states, 188637 states have (on average 1.6369694174525675) internal successors, (308793), 188554 states have internal predecessors, (308793), 36158 states have call successors, (36158), 52 states have call predecessors, (36158), 52 states have return successors, (39440), 36244 states have call predecessors, (39440), 36157 states have call successors, (39440) [2024-12-02 13:41:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224848 states to 224848 states and 384391 transitions. [2024-12-02 13:41:54,663 INFO L78 Accepts]: Start accepts. Automaton has 224848 states and 384391 transitions. Word has length 210 [2024-12-02 13:41:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:41:54,663 INFO L471 AbstractCegarLoop]: Abstraction has 224848 states and 384391 transitions. [2024-12-02 13:41:54,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-12-02 13:41:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 224848 states and 384391 transitions. [2024-12-02 13:41:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 13:41:54,860 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:41:54,860 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:41:54,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 13:41:55,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 13:41:55,060 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:41:55,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:41:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2098785729, now seen corresponding path program 1 times [2024-12-02 13:41:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:41:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377907035] [2024-12-02 13:41:55,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:41:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 13:41:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:41:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377907035] [2024-12-02 13:41:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377907035] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:41:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605058428] [2024-12-02 13:41:55,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:41:55,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:41:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:41:55,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:41:55,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:41:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:41:56,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 13:41:56,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:41:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 13:41:56,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:41:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 13:41:56,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605058428] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:41:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:41:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-12-02 13:41:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335863705] [2024-12-02 13:41:56,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:41:56,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 13:41:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:41:56,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 13:41:56,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:41:56,762 INFO L87 Difference]: Start difference. First operand 224848 states and 384391 transitions. Second operand has 28 states, 26 states have (on average 10.23076923076923) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) [2024-12-02 13:42:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:42:14,262 INFO L93 Difference]: Finished difference Result 449173 states and 786616 transitions. [2024-12-02 13:42:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-12-02 13:42:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 10.23076923076923) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) Word has length 178 [2024-12-02 13:42:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:42:15,873 INFO L225 Difference]: With dead ends: 449173 [2024-12-02 13:42:15,873 INFO L226 Difference]: Without dead ends: 448929 [2024-12-02 13:42:16,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 13:42:16,022 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 6359 mSDsluCounter, 5526 mSDsCounter, 0 mSdLazyCounter, 15483 mSolverCounterSat, 1749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6425 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 17232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1749 IncrementalHoareTripleChecker+Valid, 15483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:42:16,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6425 Valid, 5788 Invalid, 17232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1749 Valid, 15483 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 13:42:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448929 states. [2024-12-02 13:42:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448929 to 448775. [2024-12-02 13:42:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448775 states, 376519 states have (on average 1.6370674521073305) internal successors, (616387), 376207 states have internal predecessors, (616387), 72053 states have call successors, (72053), 184 states have call predecessors, (72053), 202 states have return successors, (91238), 72401 states have call predecessors, (91238), 72044 states have call successors, (91238) [2024-12-02 13:42:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448775 states to 448775 states and 779678 transitions. [2024-12-02 13:42:32,493 INFO L78 Accepts]: Start accepts. Automaton has 448775 states and 779678 transitions. Word has length 178 [2024-12-02 13:42:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:42:32,494 INFO L471 AbstractCegarLoop]: Abstraction has 448775 states and 779678 transitions. [2024-12-02 13:42:32,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 10.23076923076923) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) [2024-12-02 13:42:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 448775 states and 779678 transitions. [2024-12-02 13:42:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 13:42:33,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:42:33,321 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:42:33,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:42:33,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 13:42:33,522 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:42:33,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:42:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1496283664, now seen corresponding path program 1 times [2024-12-02 13:42:33,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:42:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158598941] [2024-12-02 13:42:33,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:42:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:42:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:42:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 13:42:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:42:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158598941] [2024-12-02 13:42:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158598941] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:42:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372201624] [2024-12-02 13:42:33,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:42:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:42:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:42:33,780 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:42:33,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:42:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:42:34,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:42:34,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:42:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 13:42:34,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:42:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372201624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:42:34,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:42:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 13:42:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136191207] [2024-12-02 13:42:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:42:34,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:42:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:42:34,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:42:34,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:42:34,287 INFO L87 Difference]: Start difference. First operand 448775 states and 779678 transitions. Second operand has 9 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 13:42:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:42:43,898 INFO L93 Difference]: Finished difference Result 450656 states and 782431 transitions. [2024-12-02 13:42:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:42:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2024-12-02 13:42:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:42:45,847 INFO L225 Difference]: With dead ends: 450656 [2024-12-02 13:42:45,847 INFO L226 Difference]: Without dead ends: 448883 [2024-12-02 13:42:45,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:42:45,985 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 636 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:42:45,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 4098 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:42:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448883 states. [2024-12-02 13:43:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448883 to 448877. [2024-12-02 13:43:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448877 states, 376579 states have (on average 1.6369978145355955) internal successors, (616459), 376270 states have internal predecessors, (616459), 72092 states have call successors, (72092), 187 states have call predecessors, (72092), 205 states have return successors, (91287), 72437 states have call predecessors, (91287), 72074 states have call successors, (91287) [2024-12-02 13:43:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448877 states to 448877 states and 779838 transitions. [2024-12-02 13:43:03,466 INFO L78 Accepts]: Start accepts. Automaton has 448877 states and 779838 transitions. Word has length 200 [2024-12-02 13:43:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:43:03,466 INFO L471 AbstractCegarLoop]: Abstraction has 448877 states and 779838 transitions. [2024-12-02 13:43:03,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 13:43:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 448877 states and 779838 transitions. [2024-12-02 13:43:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 13:43:04,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:43:04,424 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:43:04,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:43:04,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 13:43:04,624 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:43:04,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:43:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -933525640, now seen corresponding path program 1 times [2024-12-02 13:43:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:43:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023570755] [2024-12-02 13:43:04,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:43:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:43:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:43:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 13:43:04,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:43:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023570755] [2024-12-02 13:43:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023570755] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:43:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021074745] [2024-12-02 13:43:04,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:43:04,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:43:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:43:04,765 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:43:04,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3246dd08-fedc-4c64-a9d7-40bca43ad5ce/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:43:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:43:05,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 13:43:05,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:43:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 13:43:05,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:43:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:43:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021074745] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:43:05,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:43:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-12-02 13:43:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072892127] [2024-12-02 13:43:05,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:43:05,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 13:43:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:43:05,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 13:43:05,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:43:05,542 INFO L87 Difference]: Start difference. First operand 448877 states and 779838 transitions. Second operand has 23 states, 22 states have (on average 12.590909090909092) internal successors, (277), 19 states have internal predecessors, (277), 7 states have call successors, (56), 8 states have call predecessors, (56), 10 states have return successors, (48), 8 states have call predecessors, (48), 7 states have call successors, (48) [2024-12-02 13:43:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:43:29,893 INFO L93 Difference]: Finished difference Result 900075 states and 1596884 transitions. [2024-12-02 13:43:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 13:43:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 12.590909090909092) internal successors, (277), 19 states have internal predecessors, (277), 7 states have call successors, (56), 8 states have call predecessors, (56), 10 states have return successors, (48), 8 states have call predecessors, (48), 7 states have call successors, (48) Word has length 181 [2024-12-02 13:43:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:43:33,492 INFO L225 Difference]: With dead ends: 900075 [2024-12-02 13:43:33,493 INFO L226 Difference]: Without dead ends: 898204 [2024-12-02 13:43:33,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=418, Invalid=2444, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 13:43:33,879 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 2820 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 7611 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 8371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 7611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:43:33,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2839 Valid, 2852 Invalid, 8371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 7611 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 13:43:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898204 states.