./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product30.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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/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 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:53:54,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:53:55,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:53:55,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:53:55,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:53:55,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:53:55,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:53:55,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:53:55,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:53:55,040 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:53:55,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:53:55,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:53:55,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:53:55,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:53:55,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:53:55,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:53:55,042 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:53:55,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:53:55,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:53:55,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:53:55,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:53:55,043 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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/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 -> 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 [2024-12-02 14:53:55,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:53:55,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:53:55,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:53:55,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:53:55,279 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:53:55,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2024-12-02 14:53:57,939 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/data/01355b05e/654decc14f544b8091392093a7198f92/FLAGfc24521aa [2024-12-02 14:53:58,204 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:53:58,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2024-12-02 14:53:58,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/data/01355b05e/654decc14f544b8091392093a7198f92/FLAGfc24521aa [2024-12-02 14:53:58,233 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/data/01355b05e/654decc14f544b8091392093a7198f92 [2024-12-02 14:53:58,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:53:58,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:53:58,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:53:58,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:53:58,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:53:58,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474937fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58, skipping insertion in model container [2024-12-02 14:53:58,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:53:58,662 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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2024-12-02 14:53:58,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:53:58,746 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:53:58,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-12-02 14:53:58,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1128] [2024-12-02 14:53:58,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1146] [2024-12-02 14:53:58,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1371] [2024-12-02 14:53:58,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [1420] [2024-12-02 14:53:58,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1455] [2024-12-02 14:53:58,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1828] [2024-12-02 14:53:58,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2226] [2024-12-02 14:53:58,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2235] [2024-12-02 14:53:58,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2371] [2024-12-02 14:53:58,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2737] [2024-12-02 14:53:58,819 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_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2024-12-02 14:53:58,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:53:58,872 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:53:58,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58 WrapperNode [2024-12-02 14:53:58,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:53:58,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:53:58,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:53:58,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:53:58,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,933 INFO L138 Inliner]: procedures = 131, calls = 205, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 917 [2024-12-02 14:53:58,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:53:58,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:53:58,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:53:58,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:53:58,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,969 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 14:53:58,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,984 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:58,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:59,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:59,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:53:59,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:53:59,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:53:59,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:53:59,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (1/1) ... [2024-12-02 14:53:59,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:53:59,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:53:59,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:53:59,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:53:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 14:53:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 14:53:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 14:53:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 14:53:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 14:53:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 14:53:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 14:53:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 14:53:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 14:53:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 14:53:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 14:53:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-12-02 14:53:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-12-02 14:53:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 14:53:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 14:53:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 14:53:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 14:53:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 14:53:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:53:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 14:53:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 14:53:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:53:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:53:59,219 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:53:59,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:53:59,967 INFO L? ?]: Removed 437 outVars from TransFormulas that were not future-live. [2024-12-02 14:53:59,968 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:53:59,982 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:53:59,983 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:53:59,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:53:59 BoogieIcfgContainer [2024-12-02 14:53:59,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:53:59,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:53:59,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:53:59,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:53:59,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:53:58" (1/3) ... [2024-12-02 14:53:59,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fac3447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:53:59, skipping insertion in model container [2024-12-02 14:53:59,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:53:58" (2/3) ... [2024-12-02 14:53:59,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fac3447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:53:59, skipping insertion in model container [2024-12-02 14:53:59,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:53:59" (3/3) ... [2024-12-02 14:53:59,991 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2024-12-02 14:54:00,002 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:54:00,004 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product30.cil.c that has 25 procedures, 353 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:54:00,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:54:00,064 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;@1fafe285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:54:00,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:54:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 273 states have (on average 1.5164835164835164) internal successors, (414), 277 states have internal predecessors, (414), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 14:54:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 14:54:00,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:00,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:00,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:00,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1881730979, now seen corresponding path program 1 times [2024-12-02 14:54:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578656556] [2024-12-02 14:54:00,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:54:00,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578656556] [2024-12-02 14:54:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578656556] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302733388] [2024-12-02 14:54:00,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:00,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:54:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:01,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:54:01,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 14:54:01,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302733388] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 14:54:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028643329] [2024-12-02 14:54:01,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:01,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:54:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:01,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:54:01,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:01,101 INFO L87 Difference]: Start difference. First operand has 353 states, 273 states have (on average 1.5164835164835164) internal successors, (414), 277 states have internal predecessors, (414), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:01,149 INFO L93 Difference]: Finished difference Result 553 states and 799 transitions. [2024-12-02 14:54:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:54:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-12-02 14:54:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:01,163 INFO L225 Difference]: With dead ends: 553 [2024-12-02 14:54:01,163 INFO L226 Difference]: Without dead ends: 346 [2024-12-02 14:54:01,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 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 14:54:01,169 INFO L435 NwaCegarLoop]: 518 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, 518 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 14:54:01,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-12-02 14:54:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-12-02 14:54:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 267 states have (on average 1.5093632958801497) internal successors, (403), 270 states have internal predecessors, (403), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-12-02 14:54:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 510 transitions. [2024-12-02 14:54:01,228 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 510 transitions. Word has length 142 [2024-12-02 14:54:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:01,229 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 510 transitions. [2024-12-02 14:54:01,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 510 transitions. [2024-12-02 14:54:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 14:54:01,234 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:01,234 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:01,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:54:01,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:01,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:01,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash 679886377, now seen corresponding path program 1 times [2024-12-02 14:54:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513915848] [2024-12-02 14:54:01,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:54:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513915848] [2024-12-02 14:54:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513915848] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455501328] [2024-12-02 14:54:01,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:01,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:01,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:01,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:01,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:54:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:02,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:54:02,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 14:54:02,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455501328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:02,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 14:54:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274245809] [2024-12-02 14:54:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:02,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:02,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:02,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:54:02,120 INFO L87 Difference]: Start difference. First operand 346 states and 510 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:02,165 INFO L93 Difference]: Finished difference Result 542 states and 779 transitions. [2024-12-02 14:54:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:02,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-12-02 14:54:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:02,171 INFO L225 Difference]: With dead ends: 542 [2024-12-02 14:54:02,171 INFO L226 Difference]: Without dead ends: 348 [2024-12-02 14:54:02,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 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 14:54:02,173 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 1 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1014 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 14:54:02,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1014 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-12-02 14:54:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2024-12-02 14:54:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.507462686567164) internal successors, (404), 271 states have internal predecessors, (404), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-12-02 14:54:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2024-12-02 14:54:02,200 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 142 [2024-12-02 14:54:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:02,201 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2024-12-02 14:54:02,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2024-12-02 14:54:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 14:54:02,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:02,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:54:02,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:54:02,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 14:54:02,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:02,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1790238396, now seen corresponding path program 1 times [2024-12-02 14:54:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715843813] [2024-12-02 14:54:02,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:54:02,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715843813] [2024-12-02 14:54:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715843813] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849871354] [2024-12-02 14:54:02,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:02,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:02,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:02,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:02,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:54:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:03,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:03,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 14:54:03,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:03,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849871354] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:03,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:03,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 14:54:03,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892611221] [2024-12-02 14:54:03,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:03,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:03,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:03,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:54:03,059 INFO L87 Difference]: Start difference. First operand 347 states and 511 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:03,093 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2024-12-02 14:54:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2024-12-02 14:54:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:03,097 INFO L225 Difference]: With dead ends: 724 [2024-12-02 14:54:03,097 INFO L226 Difference]: Without dead ends: 403 [2024-12-02 14:54:03,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 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 14:54:03,099 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 107 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 980 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 14:54:03,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 980 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-12-02 14:54:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 395. [2024-12-02 14:54:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.5245901639344261) internal successors, (465), 308 states have internal predecessors, (465), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 14:54:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 594 transitions. [2024-12-02 14:54:03,123 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 594 transitions. Word has length 150 [2024-12-02 14:54:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:03,124 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 594 transitions. [2024-12-02 14:54:03,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 594 transitions. [2024-12-02 14:54:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 14:54:03,127 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:03,127 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:54:03,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:54:03,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 14:54:03,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:03,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1817815171, now seen corresponding path program 1 times [2024-12-02 14:54:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238128696] [2024-12-02 14:54:03,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:54:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238128696] [2024-12-02 14:54:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238128696] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837060094] [2024-12-02 14:54:03,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:03,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:03,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:03,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:54:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:03,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:54:03,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 14:54:03,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837060094] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:03,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 14:54:03,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25267384] [2024-12-02 14:54:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:03,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:03,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:03,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:54:03,963 INFO L87 Difference]: Start difference. First operand 395 states and 594 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:04,034 INFO L93 Difference]: Finished difference Result 781 states and 1178 transitions. [2024-12-02 14:54:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2024-12-02 14:54:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:04,039 INFO L225 Difference]: With dead ends: 781 [2024-12-02 14:54:04,039 INFO L226 Difference]: Without dead ends: 397 [2024-12-02 14:54:04,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 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 14:54:04,041 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 2 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1997 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 14:54:04,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1997 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-12-02 14:54:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-12-02 14:54:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.522875816993464) internal successors, (466), 310 states have internal predecessors, (466), 65 states have call successors, (65), 24 states have call predecessors, (65), 25 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2024-12-02 14:54:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 597 transitions. [2024-12-02 14:54:04,061 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 597 transitions. Word has length 151 [2024-12-02 14:54:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:04,061 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 597 transitions. [2024-12-02 14:54:04,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 597 transitions. [2024-12-02 14:54:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 14:54:04,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:04,065 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 14:54:04,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:54:04,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:04,266 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:04,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1359582404, now seen corresponding path program 1 times [2024-12-02 14:54:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45222870] [2024-12-02 14:54:04,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:54:04,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:04,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45222870] [2024-12-02 14:54:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45222870] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:04,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950868019] [2024-12-02 14:54:04,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:04,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:04,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:04,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:04,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:54:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:04,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:54:04,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 14:54:04,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:04,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950868019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:04,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:04,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 14:54:04,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362561565] [2024-12-02 14:54:04,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:04,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:04,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:04,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:54:04,867 INFO L87 Difference]: Start difference. First operand 397 states and 597 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:04,936 INFO L93 Difference]: Finished difference Result 783 states and 1183 transitions. [2024-12-02 14:54:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2024-12-02 14:54:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:04,940 INFO L225 Difference]: With dead ends: 783 [2024-12-02 14:54:04,940 INFO L226 Difference]: Without dead ends: 399 [2024-12-02 14:54:04,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 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 14:54:04,942 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 2 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1983 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 14:54:04,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1983 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-12-02 14:54:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2024-12-02 14:54:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.521172638436482) internal successors, (467), 312 states have internal predecessors, (467), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2024-12-02 14:54:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 603 transitions. [2024-12-02 14:54:04,963 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 603 transitions. Word has length 152 [2024-12-02 14:54:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:04,963 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 603 transitions. [2024-12-02 14:54:04,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 603 transitions. [2024-12-02 14:54:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:54:04,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:04,967 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:54:04,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 14:54:05,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:05,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:05,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1492555068, now seen corresponding path program 1 times [2024-12-02 14:54:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:05,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179454163] [2024-12-02 14:54:05,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:05,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:54:05,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:05,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179454163] [2024-12-02 14:54:05,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179454163] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:05,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:05,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:05,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32654294] [2024-12-02 14:54:05,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:05,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:05,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:05,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:05,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:05,375 INFO L87 Difference]: Start difference. First operand 399 states and 603 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:05,429 INFO L93 Difference]: Finished difference Result 775 states and 1174 transitions. [2024-12-02 14:54:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-12-02 14:54:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:05,432 INFO L225 Difference]: With dead ends: 775 [2024-12-02 14:54:05,432 INFO L226 Difference]: Without dead ends: 399 [2024-12-02 14:54:05,433 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 14:54:05,434 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 2 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2001 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 14:54:05,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2001 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-12-02 14:54:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2024-12-02 14:54:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.521172638436482) internal successors, (467), 312 states have internal predecessors, (467), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2024-12-02 14:54:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2024-12-02 14:54:05,453 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 153 [2024-12-02 14:54:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:05,453 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2024-12-02 14:54:05,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2024-12-02 14:54:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:54:05,456 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:05,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:05,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:54:05,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:05,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 815822041, now seen corresponding path program 2 times [2024-12-02 14:54:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:05,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274293617] [2024-12-02 14:54:05,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:54:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:05,492 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:54:05,492 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:54:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:54:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274293617] [2024-12-02 14:54:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274293617] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:05,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:05,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:54:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272418732] [2024-12-02 14:54:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:05,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:54:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:05,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:54:05,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:54:05,656 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:06,115 INFO L93 Difference]: Finished difference Result 920 states and 1395 transitions. [2024-12-02 14:54:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:54:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2024-12-02 14:54:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:06,120 INFO L225 Difference]: With dead ends: 920 [2024-12-02 14:54:06,120 INFO L226 Difference]: Without dead ends: 732 [2024-12-02 14:54:06,122 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 14:54:06,122 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 942 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:06,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2979 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:54:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-12-02 14:54:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 676. [2024-12-02 14:54:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 525 states have (on average 1.5561904761904761) internal successors, (817), 531 states have internal predecessors, (817), 108 states have call successors, (108), 41 states have call predecessors, (108), 42 states have return successors, (123), 106 states have call predecessors, (123), 107 states have call successors, (123) [2024-12-02 14:54:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1048 transitions. [2024-12-02 14:54:06,164 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1048 transitions. Word has length 154 [2024-12-02 14:54:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:06,165 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 1048 transitions. [2024-12-02 14:54:06,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1048 transitions. [2024-12-02 14:54:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 14:54:06,169 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:06,169 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:54:06,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:54:06,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:06,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1060355703, now seen corresponding path program 1 times [2024-12-02 14:54:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274242170] [2024-12-02 14:54:06,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:54:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274242170] [2024-12-02 14:54:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274242170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:06,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604459315] [2024-12-02 14:54:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:06,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:06,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:06,369 INFO L87 Difference]: Start difference. First operand 676 states and 1048 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:06,431 INFO L93 Difference]: Finished difference Result 1321 states and 2056 transitions. [2024-12-02 14:54:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-12-02 14:54:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:06,436 INFO L225 Difference]: With dead ends: 1321 [2024-12-02 14:54:06,436 INFO L226 Difference]: Without dead ends: 680 [2024-12-02 14:54:06,438 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 14:54:06,439 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 1 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2004 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 14:54:06,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2004 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-12-02 14:54:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2024-12-02 14:54:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 527 states have (on average 1.554079696394687) internal successors, (819), 535 states have internal predecessors, (819), 108 states have call successors, (108), 41 states have call predecessors, (108), 44 states have return successors, (126), 106 states have call predecessors, (126), 107 states have call successors, (126) [2024-12-02 14:54:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1053 transitions. [2024-12-02 14:54:06,475 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1053 transitions. Word has length 155 [2024-12-02 14:54:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:06,475 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1053 transitions. [2024-12-02 14:54:06,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1053 transitions. [2024-12-02 14:54:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:54:06,480 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:06,480 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:54:06,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:54:06,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:06,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 850129985, now seen corresponding path program 1 times [2024-12-02 14:54:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227105348] [2024-12-02 14:54:06,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:54:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227105348] [2024-12-02 14:54:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227105348] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:06,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:54:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047404117] [2024-12-02 14:54:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:06,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:54:06,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:06,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:54:06,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:54:06,668 INFO L87 Difference]: Start difference. First operand 680 states and 1053 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:54:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:06,811 INFO L93 Difference]: Finished difference Result 1320 states and 2049 transitions. [2024-12-02 14:54:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:54:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 156 [2024-12-02 14:54:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:06,816 INFO L225 Difference]: With dead ends: 1320 [2024-12-02 14:54:06,816 INFO L226 Difference]: Without dead ends: 684 [2024-12-02 14:54:06,818 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 14:54:06,819 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 7 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3429 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 14:54:06,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3429 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:54:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-12-02 14:54:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 682. [2024-12-02 14:54:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 529 states have (on average 1.551984877126654) internal successors, (821), 536 states have internal predecessors, (821), 108 states have call successors, (108), 42 states have call predecessors, (108), 44 states have return successors, (124), 106 states have call predecessors, (124), 107 states have call successors, (124) [2024-12-02 14:54:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1053 transitions. [2024-12-02 14:54:06,854 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1053 transitions. Word has length 156 [2024-12-02 14:54:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:06,854 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1053 transitions. [2024-12-02 14:54:06,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:54:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1053 transitions. [2024-12-02 14:54:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 14:54:06,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:06,859 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:54:06,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:54:06,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:06,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash -337189005, now seen corresponding path program 2 times [2024-12-02 14:54:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:06,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934327106] [2024-12-02 14:54:06,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:54:06,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:06,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:54:06,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:54:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:54:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934327106] [2024-12-02 14:54:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934327106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:54:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290135479] [2024-12-02 14:54:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:07,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:54:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:07,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:54:07,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:07,076 INFO L87 Difference]: Start difference. First operand 682 states and 1053 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:07,217 INFO L93 Difference]: Finished difference Result 920 states and 1391 transitions. [2024-12-02 14:54:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:54:07,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 157 [2024-12-02 14:54:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:07,223 INFO L225 Difference]: With dead ends: 920 [2024-12-02 14:54:07,223 INFO L226 Difference]: Without dead ends: 730 [2024-12-02 14:54:07,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:54:07,224 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 40 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:07,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4220 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:54:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-12-02 14:54:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 721. [2024-12-02 14:54:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 553 states have (on average 1.5443037974683544) internal successors, (854), 563 states have internal predecessors, (854), 122 states have call successors, (122), 42 states have call predecessors, (122), 45 states have return successors, (142), 119 states have call predecessors, (142), 121 states have call successors, (142) [2024-12-02 14:54:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1118 transitions. [2024-12-02 14:54:07,268 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1118 transitions. Word has length 157 [2024-12-02 14:54:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:07,268 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1118 transitions. [2024-12-02 14:54:07,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:54:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1118 transitions. [2024-12-02 14:54:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 14:54:07,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:07,273 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:07,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:54:07,273 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:07,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:07,274 INFO L85 PathProgramCache]: Analyzing trace with hash -381429687, now seen corresponding path program 1 times [2024-12-02 14:54:07,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:07,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13068818] [2024-12-02 14:54:07,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:54:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13068818] [2024-12-02 14:54:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13068818] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918963639] [2024-12-02 14:54:07,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:07,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:54:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:07,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:54:07,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 14:54:07,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:07,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918963639] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:07,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:07,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 14:54:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558872646] [2024-12-02 14:54:07,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:07,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:07,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:07,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:54:07,794 INFO L87 Difference]: Start difference. First operand 721 states and 1118 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:07,866 INFO L93 Difference]: Finished difference Result 1237 states and 1899 transitions. [2024-12-02 14:54:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2024-12-02 14:54:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:07,872 INFO L225 Difference]: With dead ends: 1237 [2024-12-02 14:54:07,872 INFO L226 Difference]: Without dead ends: 727 [2024-12-02 14:54:07,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 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 14:54:07,874 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 1 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1994 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 14:54:07,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1994 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:07,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-12-02 14:54:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 723. [2024-12-02 14:54:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.5433212996389891) internal successors, (855), 565 states have internal predecessors, (855), 122 states have call successors, (122), 42 states have call predecessors, (122), 46 states have return successors, (145), 119 states have call predecessors, (145), 121 states have call successors, (145) [2024-12-02 14:54:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1122 transitions. [2024-12-02 14:54:07,915 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1122 transitions. Word has length 159 [2024-12-02 14:54:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:07,915 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1122 transitions. [2024-12-02 14:54:07,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1122 transitions. [2024-12-02 14:54:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 14:54:07,919 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:07,920 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:54:07,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:54:08,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:08,120 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:08,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -810580377, now seen corresponding path program 1 times [2024-12-02 14:54:08,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:08,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505964978] [2024-12-02 14:54:08,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 14:54:08,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505964978] [2024-12-02 14:54:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505964978] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:54:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316473865] [2024-12-02 14:54:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:08,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:54:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:08,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:54:08,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:54:08,238 INFO L87 Difference]: Start difference. First operand 723 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:54:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:08,372 INFO L93 Difference]: Finished difference Result 1415 states and 2203 transitions. [2024-12-02 14:54:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:54:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 158 [2024-12-02 14:54:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:08,376 INFO L225 Difference]: With dead ends: 1415 [2024-12-02 14:54:08,376 INFO L226 Difference]: Without dead ends: 733 [2024-12-02 14:54:08,378 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 14:54:08,378 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 5 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:08,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3443 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:54:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-12-02 14:54:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2024-12-02 14:54:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 560 states have (on average 1.5375) internal successors, (861), 572 states have internal predecessors, (861), 122 states have call successors, (122), 43 states have call predecessors, (122), 48 states have return successors, (151), 119 states have call predecessors, (151), 121 states have call successors, (151) [2024-12-02 14:54:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1134 transitions. [2024-12-02 14:54:08,403 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1134 transitions. Word has length 158 [2024-12-02 14:54:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:08,403 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1134 transitions. [2024-12-02 14:54:08,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:54:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1134 transitions. [2024-12-02 14:54:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:54:08,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:08,407 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:08,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:54:08,407 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:08,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1877233573, now seen corresponding path program 1 times [2024-12-02 14:54:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556740013] [2024-12-02 14:54:08,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:54:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556740013] [2024-12-02 14:54:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556740013] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819213253] [2024-12-02 14:54:08,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:08,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:08,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:08,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:08,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:54:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:08,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:08,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 14:54:08,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:54:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 14:54:09,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819213253] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:54:09,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:54:09,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-12-02 14:54:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583796160] [2024-12-02 14:54:09,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:54:09,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:54:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:09,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:54:09,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:09,079 INFO L87 Difference]: Start difference. First operand 731 states and 1134 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-12-02 14:54:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:09,281 INFO L93 Difference]: Finished difference Result 1796 states and 2879 transitions. [2024-12-02 14:54:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:54:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 161 [2024-12-02 14:54:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:09,289 INFO L225 Difference]: With dead ends: 1796 [2024-12-02 14:54:09,290 INFO L226 Difference]: Without dead ends: 1273 [2024-12-02 14:54:09,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 318 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 14:54:09,292 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 410 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:09,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 3363 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:54:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-12-02 14:54:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1237. [2024-12-02 14:54:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 971 states have (on average 1.600411946446962) internal successors, (1554), 975 states have internal predecessors, (1554), 221 states have call successors, (221), 42 states have call predecessors, (221), 44 states have return successors, (264), 223 states have call predecessors, (264), 220 states have call successors, (264) [2024-12-02 14:54:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2039 transitions. [2024-12-02 14:54:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2039 transitions. Word has length 161 [2024-12-02 14:54:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:09,357 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 2039 transitions. [2024-12-02 14:54:09,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-12-02 14:54:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2039 transitions. [2024-12-02 14:54:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 14:54:09,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:09,365 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:09,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:54:09,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:09,565 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:09,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash 589845157, now seen corresponding path program 1 times [2024-12-02 14:54:09,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:09,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601311217] [2024-12-02 14:54:09,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601311217] [2024-12-02 14:54:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601311217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036538420] [2024-12-02 14:54:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:09,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:09,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:09,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:09,631 INFO L87 Difference]: Start difference. First operand 1237 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:09,688 INFO L93 Difference]: Finished difference Result 2882 states and 4825 transitions. [2024-12-02 14:54:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2024-12-02 14:54:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:09,698 INFO L225 Difference]: With dead ends: 2882 [2024-12-02 14:54:09,699 INFO L226 Difference]: Without dead ends: 1728 [2024-12-02 14:54:09,703 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 14:54:09,704 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 105 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1020 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 14:54:09,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2024-12-02 14:54:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1718. [2024-12-02 14:54:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1349 states have (on average 1.6115641215715344) internal successors, (2174), 1347 states have internal predecessors, (2174), 324 states have call successors, (324), 42 states have call predecessors, (324), 44 states have return successors, (390), 332 states have call predecessors, (390), 323 states have call successors, (390) [2024-12-02 14:54:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2888 transitions. [2024-12-02 14:54:09,803 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2888 transitions. Word has length 163 [2024-12-02 14:54:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:09,803 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2888 transitions. [2024-12-02 14:54:09,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2888 transitions. [2024-12-02 14:54:09,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 14:54:09,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:09,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:09,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:54:09,813 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:09,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 201771385, now seen corresponding path program 1 times [2024-12-02 14:54:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:09,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219317502] [2024-12-02 14:54:09,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219317502] [2024-12-02 14:54:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219317502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889151162] [2024-12-02 14:54:09,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:09,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:10,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:54:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:10,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:10,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 14:54:10,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:10,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889151162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:10,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:10,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 14:54:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115492354] [2024-12-02 14:54:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:10,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:10,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:10,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:10,355 INFO L87 Difference]: Start difference. First operand 1718 states and 2888 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:10,397 INFO L93 Difference]: Finished difference Result 4028 states and 6852 transitions. [2024-12-02 14:54:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2024-12-02 14:54:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:10,408 INFO L225 Difference]: With dead ends: 4028 [2024-12-02 14:54:10,408 INFO L226 Difference]: Without dead ends: 2476 [2024-12-02 14:54:10,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 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 14:54:10,413 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 99 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1009 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 14:54:10,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1009 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2024-12-02 14:54:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2466. [2024-12-02 14:54:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1969 states have (on average 1.6236668359573387) internal successors, (3197), 1958 states have internal predecessors, (3197), 452 states have call successors, (452), 42 states have call predecessors, (452), 44 states have return successors, (555), 469 states have call predecessors, (555), 451 states have call successors, (555) [2024-12-02 14:54:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4204 transitions. [2024-12-02 14:54:10,509 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4204 transitions. Word has length 178 [2024-12-02 14:54:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:10,509 INFO L471 AbstractCegarLoop]: Abstraction has 2466 states and 4204 transitions. [2024-12-02 14:54:10,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4204 transitions. [2024-12-02 14:54:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:54:10,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:10,518 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:10,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:54:10,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 14:54:10,719 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash 144709142, now seen corresponding path program 1 times [2024-12-02 14:54:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723284451] [2024-12-02 14:54:10,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723284451] [2024-12-02 14:54:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723284451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:10,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:10,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264857752] [2024-12-02 14:54:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:10,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:10,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:10,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:10,789 INFO L87 Difference]: Start difference. First operand 2466 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:10,870 INFO L93 Difference]: Finished difference Result 6300 states and 10816 transitions. [2024-12-02 14:54:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:10,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2024-12-02 14:54:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:10,885 INFO L225 Difference]: With dead ends: 6300 [2024-12-02 14:54:10,885 INFO L226 Difference]: Without dead ends: 3972 [2024-12-02 14:54:10,891 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 14:54:10,891 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 103 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1014 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 14:54:10,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1014 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2024-12-02 14:54:10,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3962. [2024-12-02 14:54:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3187 states have (on average 1.632256040163163) internal successors, (5202), 3176 states have internal predecessors, (5202), 730 states have call successors, (730), 42 states have call predecessors, (730), 44 states have return successors, (859), 747 states have call predecessors, (859), 729 states have call successors, (859) [2024-12-02 14:54:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6791 transitions. [2024-12-02 14:54:11,018 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6791 transitions. Word has length 165 [2024-12-02 14:54:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:11,018 INFO L471 AbstractCegarLoop]: Abstraction has 3962 states and 6791 transitions. [2024-12-02 14:54:11,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6791 transitions. [2024-12-02 14:54:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 14:54:11,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:11,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:11,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:54:11,058 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:11,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash 283615052, now seen corresponding path program 1 times [2024-12-02 14:54:11,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779419351] [2024-12-02 14:54:11,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:11,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779419351] [2024-12-02 14:54:11,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779419351] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:11,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579281207] [2024-12-02 14:54:11,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:11,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:11,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:11,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:54:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:11,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:11,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 14:54:11,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579281207] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:11,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:11,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 14:54:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154536970] [2024-12-02 14:54:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:11,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:11,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:11,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:11,570 INFO L87 Difference]: Start difference. First operand 3962 states and 6791 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, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:11,725 INFO L93 Difference]: Finished difference Result 9352 states and 16170 transitions. [2024-12-02 14:54:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:11,726 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, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 179 [2024-12-02 14:54:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:11,745 INFO L225 Difference]: With dead ends: 9352 [2024-12-02 14:54:11,745 INFO L226 Difference]: Without dead ends: 6046 [2024-12-02 14:54:11,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 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 14:54:11,752 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 97 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1009 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 14:54:11,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1009 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2024-12-02 14:54:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 6036. [2024-12-02 14:54:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6036 states, 4941 states have (on average 1.63772515685084) internal successors, (8092), 4918 states have internal predecessors, (8092), 1050 states have call successors, (1050), 42 states have call predecessors, (1050), 44 states have return successors, (1258), 1079 states have call predecessors, (1258), 1049 states have call successors, (1258) [2024-12-02 14:54:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 10400 transitions. [2024-12-02 14:54:11,932 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 10400 transitions. Word has length 179 [2024-12-02 14:54:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:11,932 INFO L471 AbstractCegarLoop]: Abstraction has 6036 states and 10400 transitions. [2024-12-02 14:54:11,932 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, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 10400 transitions. [2024-12-02 14:54:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 14:54:11,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:11,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:11,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:54:12,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 14:54:12,152 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:12,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1700160451, now seen corresponding path program 1 times [2024-12-02 14:54:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:12,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312189272] [2024-12-02 14:54:12,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312189272] [2024-12-02 14:54:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312189272] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:12,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870635036] [2024-12-02 14:54:12,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:12,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:12,351 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:54:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:12,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:12,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 14:54:12,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870635036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 14:54:12,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114724894] [2024-12-02 14:54:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:12,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:12,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:12,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:12,731 INFO L87 Difference]: Start difference. First operand 6036 states and 10400 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:12,936 INFO L93 Difference]: Finished difference Result 14978 states and 25970 transitions. [2024-12-02 14:54:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:12,936 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2024-12-02 14:54:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:12,988 INFO L225 Difference]: With dead ends: 14978 [2024-12-02 14:54:12,988 INFO L226 Difference]: Without dead ends: 9902 [2024-12-02 14:54:13,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 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 14:54:13,006 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 95 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1036 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 14:54:13,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1036 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2024-12-02 14:54:13,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9892. [2024-12-02 14:54:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9892 states, 8106 states have (on average 1.6321243523316062) internal successors, (13230), 8068 states have internal predecessors, (13230), 1741 states have call successors, (1741), 42 states have call predecessors, (1741), 44 states have return successors, (2088), 1785 states have call predecessors, (2088), 1740 states have call successors, (2088) [2024-12-02 14:54:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 17059 transitions. [2024-12-02 14:54:13,544 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 17059 transitions. Word has length 180 [2024-12-02 14:54:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:13,544 INFO L471 AbstractCegarLoop]: Abstraction has 9892 states and 17059 transitions. [2024-12-02 14:54:13,544 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 17059 transitions. [2024-12-02 14:54:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:54:13,580 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:13,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:13,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:54:13,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 14:54:13,781 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:13,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1966569336, now seen corresponding path program 1 times [2024-12-02 14:54:13,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:13,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164825065] [2024-12-02 14:54:13,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:13,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164825065] [2024-12-02 14:54:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164825065] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978889151] [2024-12-02 14:54:13,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:13,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:13,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:13,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:13,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:54:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:14,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:54:14,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 14:54:14,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978889151] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:14,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:14,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 14:54:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92738168] [2024-12-02 14:54:14,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:14,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:14,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:14,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:54:14,311 INFO L87 Difference]: Start difference. First operand 9892 states and 17059 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:14,558 INFO L93 Difference]: Finished difference Result 25524 states and 44225 transitions. [2024-12-02 14:54:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:14,559 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2024-12-02 14:54:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:14,607 INFO L225 Difference]: With dead ends: 25524 [2024-12-02 14:54:14,607 INFO L226 Difference]: Without dead ends: 17080 [2024-12-02 14:54:14,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 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 14:54:14,626 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 93 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1012 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 14:54:14,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1012 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17080 states. [2024-12-02 14:54:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17080 to 17070. [2024-12-02 14:54:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17070 states, 14072 states have (on average 1.6308982376350198) internal successors, (22950), 14034 states have internal predecessors, (22950), 2953 states have call successors, (2953), 42 states have call predecessors, (2953), 44 states have return successors, (3489), 2997 states have call predecessors, (3489), 2952 states have call successors, (3489) [2024-12-02 14:54:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 29392 transitions. [2024-12-02 14:54:15,340 INFO L78 Accepts]: Start accepts. Automaton has 17070 states and 29392 transitions. Word has length 181 [2024-12-02 14:54:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:15,340 INFO L471 AbstractCegarLoop]: Abstraction has 17070 states and 29392 transitions. [2024-12-02 14:54:15,341 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17070 states and 29392 transitions. [2024-12-02 14:54:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 14:54:15,427 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:15,428 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:15,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 14:54:15,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:15,628 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:15,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 76044505, now seen corresponding path program 1 times [2024-12-02 14:54:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890963768] [2024-12-02 14:54:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890963768] [2024-12-02 14:54:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890963768] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:15,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:15,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348620340] [2024-12-02 14:54:15,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:15,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:15,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:15,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:15,726 INFO L87 Difference]: Start difference. First operand 17070 states and 29392 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:16,353 INFO L93 Difference]: Finished difference Result 45058 states and 77875 transitions. [2024-12-02 14:54:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:16,353 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2024-12-02 14:54:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:16,455 INFO L225 Difference]: With dead ends: 45058 [2024-12-02 14:54:16,455 INFO L226 Difference]: Without dead ends: 30264 [2024-12-02 14:54:16,486 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 14:54:16,487 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 93 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1042 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 14:54:16,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1042 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30264 states. [2024-12-02 14:54:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30264 to 30254. [2024-12-02 14:54:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30254 states, 24925 states have (on average 1.6214242728184554) internal successors, (40414), 24869 states have internal predecessors, (40414), 5284 states have call successors, (5284), 42 states have call predecessors, (5284), 44 states have return successors, (6239), 5346 states have call predecessors, (6239), 5283 states have call successors, (6239) [2024-12-02 14:54:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30254 states to 30254 states and 51937 transitions. [2024-12-02 14:54:17,477 INFO L78 Accepts]: Start accepts. Automaton has 30254 states and 51937 transitions. Word has length 169 [2024-12-02 14:54:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:17,477 INFO L471 AbstractCegarLoop]: Abstraction has 30254 states and 51937 transitions. [2024-12-02 14:54:17,477 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30254 states and 51937 transitions. [2024-12-02 14:54:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 14:54:17,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:17,545 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:17,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:54:17,546 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:17,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1582955767, now seen corresponding path program 1 times [2024-12-02 14:54:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:17,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511507668] [2024-12-02 14:54:17,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511507668] [2024-12-02 14:54:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511507668] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450552704] [2024-12-02 14:54:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:17,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:17,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:17,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:17,594 INFO L87 Difference]: Start difference. First operand 30254 states and 51937 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:18,806 INFO L93 Difference]: Finished difference Result 81681 states and 140809 transitions. [2024-12-02 14:54:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:18,806 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-12-02 14:54:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:19,095 INFO L225 Difference]: With dead ends: 81681 [2024-12-02 14:54:19,095 INFO L226 Difference]: Without dead ends: 54517 [2024-12-02 14:54:19,156 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 14:54:19,156 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 91 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1012 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 14:54:19,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1012 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54517 states. [2024-12-02 14:54:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54517 to 54507. [2024-12-02 14:54:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54507 states, 45182 states have (on average 1.6168385640299234) internal successors, (73052), 45105 states have internal predecessors, (73052), 9280 states have call successors, (9280), 42 states have call predecessors, (9280), 44 states have return successors, (11042), 9363 states have call predecessors, (11042), 9279 states have call successors, (11042) [2024-12-02 14:54:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54507 states to 54507 states and 93374 transitions. [2024-12-02 14:54:20,737 INFO L78 Accepts]: Start accepts. Automaton has 54507 states and 93374 transitions. Word has length 170 [2024-12-02 14:54:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:20,737 INFO L471 AbstractCegarLoop]: Abstraction has 54507 states and 93374 transitions. [2024-12-02 14:54:20,737 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 54507 states and 93374 transitions. [2024-12-02 14:54:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:54:20,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:20,849 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:20,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:54:20,849 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:20,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 471578423, now seen corresponding path program 1 times [2024-12-02 14:54:20,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:20,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952941218] [2024-12-02 14:54:20,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:20,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952941218] [2024-12-02 14:54:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952941218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:20,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:20,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710693067] [2024-12-02 14:54:20,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:20,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:20,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:20,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:20,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:20,917 INFO L87 Difference]: Start difference. First operand 54507 states and 93374 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:23,030 INFO L93 Difference]: Finished difference Result 150976 states and 258930 transitions. [2024-12-02 14:54:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:23,031 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2024-12-02 14:54:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:23,338 INFO L225 Difference]: With dead ends: 150976 [2024-12-02 14:54:23,338 INFO L226 Difference]: Without dead ends: 101055 [2024-12-02 14:54:23,497 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 14:54:23,499 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 89 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1013 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 14:54:23,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1013 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101055 states. [2024-12-02 14:54:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101055 to 101045. [2024-12-02 14:54:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101045 states, 84296 states have (on average 1.610479738065863) internal successors, (135757), 84219 states have internal predecessors, (135757), 16704 states have call successors, (16704), 42 states have call predecessors, (16704), 44 states have return successors, (19530), 16787 states have call predecessors, (19530), 16703 states have call successors, (19530) [2024-12-02 14:54:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101045 states to 101045 states and 171991 transitions. [2024-12-02 14:54:26,847 INFO L78 Accepts]: Start accepts. Automaton has 101045 states and 171991 transitions. Word has length 171 [2024-12-02 14:54:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:26,848 INFO L471 AbstractCegarLoop]: Abstraction has 101045 states and 171991 transitions. [2024-12-02 14:54:26,848 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, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 101045 states and 171991 transitions. [2024-12-02 14:54:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 14:54:27,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:27,012 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:27,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:54:27,013 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:27,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash 219799145, now seen corresponding path program 1 times [2024-12-02 14:54:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:27,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533152295] [2024-12-02 14:54:27,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:27,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 14:54:27,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533152295] [2024-12-02 14:54:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533152295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:27,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:54:27,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073464556] [2024-12-02 14:54:27,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:27,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:54:27,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:27,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:54:27,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:54:27,078 INFO L87 Difference]: Start difference. First operand 101045 states and 171991 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:30,551 INFO L93 Difference]: Finished difference Result 189469 states and 323145 transitions. [2024-12-02 14:54:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:54:30,551 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2024-12-02 14:54:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:31,110 INFO L225 Difference]: With dead ends: 189469 [2024-12-02 14:54:31,110 INFO L226 Difference]: Without dead ends: 189157 [2024-12-02 14:54:31,180 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 14:54:31,180 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 84 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1026 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 14:54:31,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1026 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189157 states. [2024-12-02 14:54:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189157 to 189147. [2024-12-02 14:54:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189147 states, 158903 states have (on average 1.6028772269875333) internal successors, (254702), 158802 states have internal predecessors, (254702), 30199 states have call successors, (30199), 42 states have call predecessors, (30199), 44 states have return successors, (35632), 30306 states have call predecessors, (35632), 30198 states have call successors, (35632) [2024-12-02 14:54:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189147 states to 189147 states and 320533 transitions. [2024-12-02 14:54:36,291 INFO L78 Accepts]: Start accepts. Automaton has 189147 states and 320533 transitions. Word has length 172 [2024-12-02 14:54:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:36,292 INFO L471 AbstractCegarLoop]: Abstraction has 189147 states and 320533 transitions. [2024-12-02 14:54:36,292 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:54:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 189147 states and 320533 transitions. [2024-12-02 14:54:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 14:54:36,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:36,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:36,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:54:36,495 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:36,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash -659478598, now seen corresponding path program 1 times [2024-12-02 14:54:36,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:36,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420609077] [2024-12-02 14:54:36,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420609077] [2024-12-02 14:54:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420609077] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976771815] [2024-12-02 14:54:36,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:36,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:36,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:36,619 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:36,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:54:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:37,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:54:37,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 14:54:37,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976771815] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 14:54:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574354547] [2024-12-02 14:54:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:37,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:37,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:37,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:54:37,226 INFO L87 Difference]: Start difference. First operand 189147 states and 320533 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:41,021 INFO L93 Difference]: Finished difference Result 278222 states and 470125 transitions. [2024-12-02 14:54:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:41,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2024-12-02 14:54:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:41,610 INFO L225 Difference]: With dead ends: 278222 [2024-12-02 14:54:41,610 INFO L226 Difference]: Without dead ends: 186137 [2024-12-02 14:54:41,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 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 14:54:41,797 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 464 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:41,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1333 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:54:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186137 states. [2024-12-02 14:54:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186137 to 186137. [2024-12-02 14:54:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186137 states, 156373 states have (on average 1.6033138713204964) internal successors, (250715), 156291 states have internal predecessors, (250715), 29718 states have call successors, (29718), 43 states have call predecessors, (29718), 45 states have return successors, (33004), 29806 states have call predecessors, (33004), 29717 states have call successors, (33004) [2024-12-02 14:54:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186137 states to 186137 states and 313437 transitions. [2024-12-02 14:54:46,879 INFO L78 Accepts]: Start accepts. Automaton has 186137 states and 313437 transitions. Word has length 186 [2024-12-02 14:54:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:46,879 INFO L471 AbstractCegarLoop]: Abstraction has 186137 states and 313437 transitions. [2024-12-02 14:54:46,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:54:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 186137 states and 313437 transitions. [2024-12-02 14:54:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 14:54:47,089 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:47,089 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, 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 14:54:47,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:54:47,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 14:54:47,290 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:47,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2076402338, now seen corresponding path program 1 times [2024-12-02 14:54:47,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125495499] [2024-12-02 14:54:47,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 14:54:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125495499] [2024-12-02 14:54:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125495499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739219194] [2024-12-02 14:54:47,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:47,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:47,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:47,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:47,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:54:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:48,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:54:48,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 14:54:48,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:54:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739219194] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:54:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-12-02 14:54:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527014723] [2024-12-02 14:54:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:48,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:54:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:48,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:54:48,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:54:48,354 INFO L87 Difference]: Start difference. First operand 186137 states and 313437 transitions. Second operand has 7 states, 6 states have (on average 23.0) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:54:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:52,020 INFO L93 Difference]: Finished difference Result 256475 states and 432773 transitions. [2024-12-02 14:54:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:54:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.0) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 198 [2024-12-02 14:54:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:52,448 INFO L225 Difference]: With dead ends: 256475 [2024-12-02 14:54:52,449 INFO L226 Difference]: Without dead ends: 166766 [2024-12-02 14:54:52,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:54:52,590 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 452 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:52,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 2148 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:54:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166766 states. [2024-12-02 14:54:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166766 to 166766. [2024-12-02 14:54:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166766 states, 139921 states have (on average 1.6042909927744942) internal successors, (224474), 139875 states have internal predecessors, (224474), 26798 states have call successors, (26798), 43 states have call predecessors, (26798), 46 states have return successors, (30028), 26851 states have call predecessors, (30028), 26797 states have call successors, (30028) [2024-12-02 14:54:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166766 states to 166766 states and 281300 transitions. [2024-12-02 14:54:57,050 INFO L78 Accepts]: Start accepts. Automaton has 166766 states and 281300 transitions. Word has length 198 [2024-12-02 14:54:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:57,051 INFO L471 AbstractCegarLoop]: Abstraction has 166766 states and 281300 transitions. [2024-12-02 14:54:57,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.0) internal successors, (138), 7 states have internal predecessors, (138), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:54:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 166766 states and 281300 transitions. [2024-12-02 14:54:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 14:54:57,185 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:57,185 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:57,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 14:54:57,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 14:54:57,386 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:57,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1866956008, now seen corresponding path program 1 times [2024-12-02 14:54:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:57,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603200196] [2024-12-02 14:54:57,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:54:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603200196] [2024-12-02 14:54:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603200196] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644274104] [2024-12-02 14:54:57,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:57,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:57,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:57,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 14:54:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:58,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 14:54:58,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:54:58,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:54:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 14:54:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644274104] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:54:58,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:54:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-12-02 14:54:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891535702] [2024-12-02 14:54:58,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:54:58,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 14:54:58,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:58,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 14:54:58,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:54:58,790 INFO L87 Difference]: Start difference. First operand 166766 states and 281300 transitions. Second operand has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-12-02 14:55:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:55:12,861 INFO L93 Difference]: Finished difference Result 333901 states and 576356 transitions. [2024-12-02 14:55:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-12-02 14:55:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 173 [2024-12-02 14:55:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:55:13,741 INFO L225 Difference]: With dead ends: 333901 [2024-12-02 14:55:13,741 INFO L226 Difference]: Without dead ends: 333647 [2024-12-02 14:55:13,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3548 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 14:55:13,833 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 5424 mSDsluCounter, 4833 mSDsCounter, 0 mSdLazyCounter, 13607 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 15083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 13607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:55:13,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5476 Valid, 5066 Invalid, 15083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1476 Valid, 13607 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 14:55:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333647 states. [2024-12-02 14:55:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333647 to 333265. [2024-12-02 14:55:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333265 states, 279619 states have (on average 1.604493972154968) internal successors, (448647), 279416 states have internal predecessors, (448647), 53466 states have call successors, (53466), 154 states have call predecessors, (53466), 179 states have return successors, (67391), 53714 states have call predecessors, (67391), 53460 states have call successors, (67391) [2024-12-02 14:55:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333265 states to 333265 states and 569504 transitions. [2024-12-02 14:55:25,621 INFO L78 Accepts]: Start accepts. Automaton has 333265 states and 569504 transitions. Word has length 173 [2024-12-02 14:55:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:55:25,622 INFO L471 AbstractCegarLoop]: Abstraction has 333265 states and 569504 transitions. [2024-12-02 14:55:25,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-12-02 14:55:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 333265 states and 569504 transitions. [2024-12-02 14:55:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 14:55:25,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:55:25,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:25,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 14:55:26,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:55:26,155 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:55:26,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:55:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1335701512, now seen corresponding path program 1 times [2024-12-02 14:55:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:55:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625499503] [2024-12-02 14:55:26,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:55:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 14:55:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:55:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625499503] [2024-12-02 14:55:26,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625499503] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:55:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391890102] [2024-12-02 14:55:26,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:55:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:55:26,290 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:55:26,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 14:55:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:26,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:55:26,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:55:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 14:55:26,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:55:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391890102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:55:26,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:55:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 14:55:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911696676] [2024-12-02 14:55:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:55:26,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:55:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:55:26,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:55:26,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:55:26,754 INFO L87 Difference]: Start difference. First operand 333265 states and 569504 transitions. Second operand has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:55:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:55:33,936 INFO L93 Difference]: Finished difference Result 335550 states and 572905 transitions. [2024-12-02 14:55:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:55:33,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 175 [2024-12-02 14:55:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:55:34,899 INFO L225 Difference]: With dead ends: 335550 [2024-12-02 14:55:34,899 INFO L226 Difference]: Without dead ends: 333869 [2024-12-02 14:55:35,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 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 14:55:35,004 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 670 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:55:35,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 3262 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:55:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333869 states. [2024-12-02 14:55:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333869 to 333851. [2024-12-02 14:55:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333851 states, 280002 states have (on average 1.6041171134491896) internal successors, (449156), 279814 states have internal predecessors, (449156), 53666 states have call successors, (53666), 157 states have call predecessors, (53666), 182 states have return successors, (67641), 53915 states have call predecessors, (67641), 53660 states have call successors, (67641) [2024-12-02 14:55:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333851 states to 333851 states and 570463 transitions. [2024-12-02 14:55:46,113 INFO L78 Accepts]: Start accepts. Automaton has 333851 states and 570463 transitions. Word has length 175 [2024-12-02 14:55:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:55:46,113 INFO L471 AbstractCegarLoop]: Abstraction has 333851 states and 570463 transitions. [2024-12-02 14:55:46,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 14:55:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 333851 states and 570463 transitions. [2024-12-02 14:55:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:55:46,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:55:46,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:46,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 14:55:47,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 14:55:47,059 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:55:47,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:55:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1769151805, now seen corresponding path program 1 times [2024-12-02 14:55:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:55:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227547303] [2024-12-02 14:55:47,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:55:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 14:55:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:55:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227547303] [2024-12-02 14:55:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227547303] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:55:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496044938] [2024-12-02 14:55:47,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:55:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:55:47,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:55:47,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 14:55:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:47,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 14:55:47,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:55:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 14:55:47,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:55:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496044938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:55:47,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:55:47,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-12-02 14:55:47,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045187002] [2024-12-02 14:55:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:55:47,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:55:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:55:47,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:55:47,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:55:47,655 INFO L87 Difference]: Start difference. First operand 333851 states and 570463 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:55:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:55:54,392 INFO L93 Difference]: Finished difference Result 335857 states and 573496 transitions. [2024-12-02 14:55:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:55:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 176 [2024-12-02 14:55:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:55:55,398 INFO L225 Difference]: With dead ends: 335857 [2024-12-02 14:55:55,398 INFO L226 Difference]: Without dead ends: 333853 [2024-12-02 14:55:55,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:55:55,492 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 649 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:55:55,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 3676 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:55:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333853 states. [2024-12-02 14:56:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333853 to 333845. [2024-12-02 14:56:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333845 states, 279993 states have (on average 1.6040722446632594) internal successors, (449129), 279808 states have internal predecessors, (449129), 53666 states have call successors, (53666), 157 states have call predecessors, (53666), 185 states have return successors, (67669), 53915 states have call predecessors, (67669), 53660 states have call successors, (67669) [2024-12-02 14:56:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333845 states to 333845 states and 570464 transitions. [2024-12-02 14:56:06,410 INFO L78 Accepts]: Start accepts. Automaton has 333845 states and 570464 transitions. Word has length 176 [2024-12-02 14:56:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:06,411 INFO L471 AbstractCegarLoop]: Abstraction has 333845 states and 570464 transitions. [2024-12-02 14:56:06,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:56:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 333845 states and 570464 transitions. [2024-12-02 14:56:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:56:06,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:06,869 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:56:06,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 14:56:07,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:56:07,069 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:07,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:07,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1701312204, now seen corresponding path program 1 times [2024-12-02 14:56:07,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:07,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887193586] [2024-12-02 14:56:07,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 14:56:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:07,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887193586] [2024-12-02 14:56:07,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887193586] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:56:07,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175736482] [2024-12-02 14:56:07,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:07,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:07,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:56:07,234 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:56:07,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fe762c5-f752-4023-b5f5-e5ebd3098fc5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 14:56:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:07,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 14:56:07,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:56:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 14:56:07,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:56:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:56:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175736482] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:56:08,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:56:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-12-02 14:56:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761417357] [2024-12-02 14:56:08,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:56:08,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 14:56:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:08,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 14:56:08,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:56:08,022 INFO L87 Difference]: Start difference. First operand 333845 states and 570464 transitions. Second operand has 23 states, 22 states have (on average 12.681818181818182) internal successors, (279), 19 states have internal predecessors, (279), 7 states have call successors, (54), 8 states have call predecessors, (54), 10 states have return successors, (49), 8 states have call predecessors, (49), 7 states have call successors, (49) [2024-12-02 14:56:25,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:25,303 INFO L93 Difference]: Finished difference Result 670449 states and 1175914 transitions. [2024-12-02 14:56:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 14:56:25,303 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 12.681818181818182) internal successors, (279), 19 states have internal predecessors, (279), 7 states have call successors, (54), 8 states have call predecessors, (54), 10 states have return successors, (49), 8 states have call predecessors, (49), 7 states have call successors, (49) Word has length 176 [2024-12-02 14:56:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:27,532 INFO L225 Difference]: With dead ends: 670449 [2024-12-02 14:56:27,533 INFO L226 Difference]: Without dead ends: 668306 [2024-12-02 14:56:27,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=454, Invalid=2626, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 14:56:27,715 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 2241 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 8023 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 8746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 8023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:27,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 3055 Invalid, 8746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 8023 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 14:56:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668306 states.