./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product28.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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/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 f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 05:56:05,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 05:56:05,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 05:56:05,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 05:56:05,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 05:56:05,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 05:56:05,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 05:56:05,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 05:56:05,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 05:56:05,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 05:56:05,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 05:56:05,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 05:56:05,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 05:56:05,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 05:56:05,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 05:56:05,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 05:56:05,413 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:56:05,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:56:05,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:56:05,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 05:56:05,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 05:56:05,414 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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/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 -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2024-12-02 05:56:05,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 05:56:05,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 05:56:05,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 05:56:05,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 05:56:05,647 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 05:56:05,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-12-02 05:56:08,315 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/data/1d5113a27/fba136f2db754249bc0640273e759140/FLAG36e6bd128 [2024-12-02 05:56:08,615 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 05:56:08,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-12-02 05:56:08,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/data/1d5113a27/fba136f2db754249bc0640273e759140/FLAG36e6bd128 [2024-12-02 05:56:08,648 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/data/1d5113a27/fba136f2db754249bc0640273e759140 [2024-12-02 05:56:08,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 05:56:08,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 05:56:08,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 05:56:08,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 05:56:08,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 05:56:08,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:56:08" (1/1) ... [2024-12-02 05:56:08,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79792ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:08, skipping insertion in model container [2024-12-02 05:56:08,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:56:08" (1/1) ... [2024-12-02 05:56:08,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 05:56:08,833 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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-12-02 05:56:09,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:56:09,207 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 05:56:09,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-02 05:56:09,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [57] [2024-12-02 05:56:09,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [217] [2024-12-02 05:56:09,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [255] [2024-12-02 05:56:09,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [591] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1084] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1102] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1468] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1485] [2024-12-02 05:56:09,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2554] [2024-12-02 05:56:09,222 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_ef163238-7535-4eaa-b6fd-f3e5f72d47da/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-12-02 05:56:09,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:56:09,359 INFO L204 MainTranslator]: Completed translation [2024-12-02 05:56:09,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09 WrapperNode [2024-12-02 05:56:09,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 05:56:09,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 05:56:09,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 05:56:09,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 05:56:09,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,431 INFO L138 Inliner]: procedures = 128, calls = 195, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 844 [2024-12-02 05:56:09,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 05:56:09,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 05:56:09,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 05:56:09,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 05:56:09,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,471 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 05:56:09,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,489 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 05:56:09,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 05:56:09,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 05:56:09,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 05:56:09,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (1/1) ... [2024-12-02 05:56:09,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:56:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:09,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 05:56:09,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 05:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 05:56:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 05:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 05:56:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 05:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 05:56:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 05:56:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 05:56:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 05:56:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 05:56:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 05:56:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 05:56:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 05:56:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 05:56:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 05:56:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 05:56:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 05:56:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 05:56:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 05:56:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 05:56:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 05:56:09,779 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 05:56:09,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 05:56:10,627 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-12-02 05:56:10,627 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 05:56:10,644 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 05:56:10,644 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 05:56:10,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:56:10 BoogieIcfgContainer [2024-12-02 05:56:10,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 05:56:10,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 05:56:10,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 05:56:10,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 05:56:10,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:56:08" (1/3) ... [2024-12-02 05:56:10,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31210a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:56:10, skipping insertion in model container [2024-12-02 05:56:10,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:09" (2/3) ... [2024-12-02 05:56:10,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31210a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:56:10, skipping insertion in model container [2024-12-02 05:56:10,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:56:10" (3/3) ... [2024-12-02 05:56:10,654 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2024-12-02 05:56:10,670 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 05:56:10,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec7_product28.cil.c that has 23 procedures, 323 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 05:56:10,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 05:56:10,750 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;@3197e596, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 05:56:10,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 05:56:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 250 states have (on average 1.524) internal successors, (381), 254 states have internal predecessors, (381), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-12-02 05:56:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 05:56:10,772 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:10,773 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:56:10,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:10,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:10,779 INFO L85 PathProgramCache]: Analyzing trace with hash -426018161, now seen corresponding path program 1 times [2024-12-02 05:56:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:10,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286528336] [2024-12-02 05:56:10,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 05:56:11,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:11,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286528336] [2024-12-02 05:56:11,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286528336] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:11,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834786921] [2024-12-02 05:56:11,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:11,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:11,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:11,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:11,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 05:56:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:11,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 05:56:11,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 05:56:11,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:56:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834786921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:11,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:56:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 05:56:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187176184] [2024-12-02 05:56:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:11,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:11,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:11,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:11,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 05:56:11,793 INFO L87 Difference]: Start difference. First operand has 323 states, 250 states have (on average 1.524) internal successors, (381), 254 states have internal predecessors, (381), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:11,874 INFO L93 Difference]: Finished difference Result 500 states and 726 transitions. [2024-12-02 05:56:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2024-12-02 05:56:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:11,888 INFO L225 Difference]: With dead ends: 500 [2024-12-02 05:56:11,888 INFO L226 Difference]: Without dead ends: 318 [2024-12-02 05:56:11,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 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 05:56:11,894 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 1 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:11,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 943 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-12-02 05:56:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2024-12-02 05:56:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 248 states have internal predecessors, (371), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 05:56:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 468 transitions. [2024-12-02 05:56:11,953 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 468 transitions. Word has length 117 [2024-12-02 05:56:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:11,954 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 468 transitions. [2024-12-02 05:56:11,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 468 transitions. [2024-12-02 05:56:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 05:56:11,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:11,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:56:11,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 05:56:12,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 05:56:12,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:12,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1266140165, now seen corresponding path program 1 times [2024-12-02 05:56:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705018779] [2024-12-02 05:56:12,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 05:56:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705018779] [2024-12-02 05:56:12,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705018779] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334835507] [2024-12-02 05:56:12,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:12,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:12,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:12,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:12,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 05:56:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:12,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 05:56:12,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 05:56:12,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:56:12,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334835507] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:12,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:56:12,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 05:56:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661589439] [2024-12-02 05:56:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:12,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:12,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:12,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 05:56:12,849 INFO L87 Difference]: Start difference. First operand 317 states and 468 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:12,892 INFO L93 Difference]: Finished difference Result 659 states and 987 transitions. [2024-12-02 05:56:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:12,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2024-12-02 05:56:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:12,897 INFO L225 Difference]: With dead ends: 659 [2024-12-02 05:56:12,897 INFO L226 Difference]: Without dead ends: 368 [2024-12-02 05:56:12,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 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 05:56:12,900 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 99 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 901 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 05:56:12,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 901 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-12-02 05:56:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360. [2024-12-02 05:56:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 277 states have (on average 1.5306859205776173) internal successors, (424), 280 states have internal predecessors, (424), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 05:56:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 543 transitions. [2024-12-02 05:56:12,932 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 543 transitions. Word has length 122 [2024-12-02 05:56:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:12,932 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 543 transitions. [2024-12-02 05:56:12,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 543 transitions. [2024-12-02 05:56:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 05:56:12,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:12,936 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:56:12,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 05:56:13,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:13,136 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:13,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1208165760, now seen corresponding path program 1 times [2024-12-02 05:56:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400467560] [2024-12-02 05:56:13,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 05:56:13,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400467560] [2024-12-02 05:56:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400467560] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84992581] [2024-12-02 05:56:13,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:13,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:13,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 05:56:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:13,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 05:56:13,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 05:56:13,715 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:56:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84992581] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:13,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:56:13,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 05:56:13,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108383105] [2024-12-02 05:56:13,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:13,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:56:13,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:13,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:56:13,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:56:13,718 INFO L87 Difference]: Start difference. First operand 360 states and 543 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:13,786 INFO L93 Difference]: Finished difference Result 711 states and 1076 transitions. [2024-12-02 05:56:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:56:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-12-02 05:56:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:13,790 INFO L225 Difference]: With dead ends: 711 [2024-12-02 05:56:13,791 INFO L226 Difference]: Without dead ends: 362 [2024-12-02 05:56:13,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 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 05:56:13,792 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 2 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1825 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 05:56:13,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1825 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-12-02 05:56:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-12-02 05:56:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.5287769784172662) internal successors, (425), 282 states have internal predecessors, (425), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2024-12-02 05:56:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 546 transitions. [2024-12-02 05:56:13,811 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 546 transitions. Word has length 123 [2024-12-02 05:56:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:13,811 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 546 transitions. [2024-12-02 05:56:13,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 546 transitions. [2024-12-02 05:56:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 05:56:13,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:13,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 05:56:13,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 05:56:14,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:14,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:14,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1441028897, now seen corresponding path program 1 times [2024-12-02 05:56:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:14,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343400781] [2024-12-02 05:56:14,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 05:56:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343400781] [2024-12-02 05:56:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343400781] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387248160] [2024-12-02 05:56:14,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:14,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:14,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 05:56:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:14,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 05:56:14,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 05:56:14,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:56:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387248160] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:14,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:56:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 05:56:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143856259] [2024-12-02 05:56:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:14,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:56:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:14,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:56:14,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 05:56:14,619 INFO L87 Difference]: Start difference. First operand 362 states and 546 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:14,692 INFO L93 Difference]: Finished difference Result 713 states and 1081 transitions. [2024-12-02 05:56:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:56:14,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-12-02 05:56:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:14,696 INFO L225 Difference]: With dead ends: 713 [2024-12-02 05:56:14,696 INFO L226 Difference]: Without dead ends: 364 [2024-12-02 05:56:14,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 05:56:14,698 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 2 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1811 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 05:56:14,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1811 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-12-02 05:56:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-12-02 05:56:14,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.5268817204301075) internal successors, (426), 284 states have internal predecessors, (426), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2024-12-02 05:56:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 552 transitions. [2024-12-02 05:56:14,716 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 552 transitions. Word has length 124 [2024-12-02 05:56:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:14,716 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 552 transitions. [2024-12-02 05:56:14,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 552 transitions. [2024-12-02 05:56:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 05:56:14,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:14,724 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:56:14,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 05:56:14,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:14,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:14,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 415718896, now seen corresponding path program 1 times [2024-12-02 05:56:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:14,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340042455] [2024-12-02 05:56:14,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 05:56:15,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:15,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340042455] [2024-12-02 05:56:15,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340042455] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:15,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:15,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:56:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511150750] [2024-12-02 05:56:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:15,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:56:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:15,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:56:15,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:56:15,067 INFO L87 Difference]: Start difference. First operand 364 states and 552 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:15,113 INFO L93 Difference]: Finished difference Result 705 states and 1072 transitions. [2024-12-02 05:56:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:56:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-12-02 05:56:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:15,116 INFO L225 Difference]: With dead ends: 705 [2024-12-02 05:56:15,116 INFO L226 Difference]: Without dead ends: 364 [2024-12-02 05:56:15,118 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 05:56:15,119 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1829 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 05:56:15,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1829 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-12-02 05:56:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-12-02 05:56:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.5268817204301075) internal successors, (426), 284 states have internal predecessors, (426), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2024-12-02 05:56:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 551 transitions. [2024-12-02 05:56:15,137 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 551 transitions. Word has length 125 [2024-12-02 05:56:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:15,137 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 551 transitions. [2024-12-02 05:56:15,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 551 transitions. [2024-12-02 05:56:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 05:56:15,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:15,140 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] [2024-12-02 05:56:15,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 05:56:15,140 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:15,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1663716435, now seen corresponding path program 2 times [2024-12-02 05:56:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463367845] [2024-12-02 05:56:15,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 05:56:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:15,176 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 05:56:15,176 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:56:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 05:56:15,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:15,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463367845] [2024-12-02 05:56:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463367845] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:15,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:15,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 05:56:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541572054] [2024-12-02 05:56:15,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:15,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 05:56:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:15,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 05:56:15,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:56:15,311 INFO L87 Difference]: Start difference. First operand 364 states and 551 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:15,819 INFO L93 Difference]: Finished difference Result 812 states and 1237 transitions. [2024-12-02 05:56:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 05:56:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2024-12-02 05:56:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:15,826 INFO L225 Difference]: With dead ends: 812 [2024-12-02 05:56:15,826 INFO L226 Difference]: Without dead ends: 653 [2024-12-02 05:56:15,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-12-02 05:56:15,827 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 474 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:15,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 3038 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 05:56:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-12-02 05:56:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 614. [2024-12-02 05:56:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 477 states have (on average 1.5681341719077568) internal successors, (748), 483 states have internal predecessors, (748), 98 states have call successors, (98), 37 states have call predecessors, (98), 38 states have return successors, (112), 96 states have call predecessors, (112), 97 states have call successors, (112) [2024-12-02 05:56:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 958 transitions. [2024-12-02 05:56:15,879 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 958 transitions. Word has length 126 [2024-12-02 05:56:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:15,879 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 958 transitions. [2024-12-02 05:56:15,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 958 transitions. [2024-12-02 05:56:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 05:56:15,884 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:15,884 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:56:15,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 05:56:15,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:15,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1055167372, now seen corresponding path program 1 times [2024-12-02 05:56:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434868281] [2024-12-02 05:56:15,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 05:56:16,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434868281] [2024-12-02 05:56:16,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434868281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:16,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:16,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:56:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879981818] [2024-12-02 05:56:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:16,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:56:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:16,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:56:16,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:56:16,021 INFO L87 Difference]: Start difference. First operand 614 states and 958 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:16,082 INFO L93 Difference]: Finished difference Result 1207 states and 1889 transitions. [2024-12-02 05:56:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:56:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2024-12-02 05:56:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:16,087 INFO L225 Difference]: With dead ends: 1207 [2024-12-02 05:56:16,087 INFO L226 Difference]: Without dead ends: 616 [2024-12-02 05:56:16,088 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 05:56:16,089 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 1 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1832 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 05:56:16,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1832 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-12-02 05:56:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-12-02 05:56:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 478 states have (on average 1.5669456066945606) internal successors, (749), 485 states have internal predecessors, (749), 98 states have call successors, (98), 37 states have call predecessors, (98), 39 states have return successors, (114), 96 states have call predecessors, (114), 97 states have call successors, (114) [2024-12-02 05:56:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 961 transitions. [2024-12-02 05:56:16,117 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 961 transitions. Word has length 127 [2024-12-02 05:56:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:16,117 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 961 transitions. [2024-12-02 05:56:16,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 961 transitions. [2024-12-02 05:56:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 05:56:16,120 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:16,120 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 05:56:16,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 05:56:16,120 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:16,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash -193643804, now seen corresponding path program 1 times [2024-12-02 05:56:16,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911274364] [2024-12-02 05:56:16,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 05:56:16,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911274364] [2024-12-02 05:56:16,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911274364] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:16,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 05:56:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522698600] [2024-12-02 05:56:16,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:16,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 05:56:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:16,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 05:56:16,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:56:16,273 INFO L87 Difference]: Start difference. First operand 616 states and 961 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:56:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:16,433 INFO L93 Difference]: Finished difference Result 1022 states and 1574 transitions. [2024-12-02 05:56:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 05:56:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 128 [2024-12-02 05:56:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:16,437 INFO L225 Difference]: With dead ends: 1022 [2024-12-02 05:56:16,437 INFO L226 Difference]: Without dead ends: 434 [2024-12-02 05:56:16,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 05:56:16,439 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 7 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3128 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 05:56:16,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3128 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 05:56:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-12-02 05:56:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2024-12-02 05:56:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 335 states have (on average 1.5253731343283583) internal successors, (511), 341 states have internal predecessors, (511), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (74), 65 states have call predecessors, (74), 65 states have call successors, (74) [2024-12-02 05:56:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 651 transitions. [2024-12-02 05:56:16,459 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 651 transitions. Word has length 128 [2024-12-02 05:56:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:16,459 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 651 transitions. [2024-12-02 05:56:16,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:56:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 651 transitions. [2024-12-02 05:56:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 05:56:16,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:16,462 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:56:16,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 05:56:16,462 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:16,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -303134747, now seen corresponding path program 2 times [2024-12-02 05:56:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:16,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601170872] [2024-12-02 05:56:16,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 05:56:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:16,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 05:56:16,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:56:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 05:56:16,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:16,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601170872] [2024-12-02 05:56:16,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601170872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:16,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:16,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 05:56:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20676012] [2024-12-02 05:56:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:16,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 05:56:16,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:16,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 05:56:16,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:56:16,586 INFO L87 Difference]: Start difference. First operand 434 states and 651 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:17,118 INFO L93 Difference]: Finished difference Result 904 states and 1373 transitions. [2024-12-02 05:56:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 05:56:17,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2024-12-02 05:56:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:17,126 INFO L225 Difference]: With dead ends: 904 [2024-12-02 05:56:17,126 INFO L226 Difference]: Without dead ends: 741 [2024-12-02 05:56:17,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-12-02 05:56:17,128 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 468 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:17,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 3191 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 05:56:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-12-02 05:56:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 610. [2024-12-02 05:56:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 474 states have (on average 1.5675105485232068) internal successors, (743), 480 states have internal predecessors, (743), 95 states have call successors, (95), 37 states have call predecessors, (95), 40 states have return successors, (116), 95 states have call predecessors, (116), 94 states have call successors, (116) [2024-12-02 05:56:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 954 transitions. [2024-12-02 05:56:17,184 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 954 transitions. Word has length 129 [2024-12-02 05:56:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:17,184 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 954 transitions. [2024-12-02 05:56:17,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 954 transitions. [2024-12-02 05:56:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 05:56:17,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:17,190 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:56:17,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 05:56:17,190 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:17,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1351770160, now seen corresponding path program 1 times [2024-12-02 05:56:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:17,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355817118] [2024-12-02 05:56:17,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:17,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 05:56:17,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355817118] [2024-12-02 05:56:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355817118] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:17,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 05:56:17,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516187533] [2024-12-02 05:56:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:17,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 05:56:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:17,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 05:56:17,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:56:17,398 INFO L87 Difference]: Start difference. First operand 610 states and 954 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:56:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:17,561 INFO L93 Difference]: Finished difference Result 1017 states and 1570 transitions. [2024-12-02 05:56:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 05:56:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 130 [2024-12-02 05:56:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:17,565 INFO L225 Difference]: With dead ends: 1017 [2024-12-02 05:56:17,565 INFO L226 Difference]: Without dead ends: 437 [2024-12-02 05:56:17,567 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 05:56:17,567 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 5 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:17,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3142 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 05:56:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-12-02 05:56:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2024-12-02 05:56:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 337 states have (on average 1.5222551928783383) internal successors, (513), 344 states have internal predecessors, (513), 66 states have call successors, (66), 30 states have call predecessors, (66), 33 states have return successors, (79), 65 states have call predecessors, (79), 65 states have call successors, (79) [2024-12-02 05:56:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 658 transitions. [2024-12-02 05:56:17,591 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 658 transitions. Word has length 130 [2024-12-02 05:56:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:17,592 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 658 transitions. [2024-12-02 05:56:17,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:56:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 658 transitions. [2024-12-02 05:56:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 05:56:17,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:17,594 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 05:56:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 05:56:17,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:17,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 897132888, now seen corresponding path program 1 times [2024-12-02 05:56:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718314644] [2024-12-02 05:56:17,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 05:56:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718314644] [2024-12-02 05:56:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718314644] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:17,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:56:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981542231] [2024-12-02 05:56:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:17,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:56:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:17,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:56:17,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:56:17,735 INFO L87 Difference]: Start difference. First operand 437 states and 658 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:17,806 INFO L93 Difference]: Finished difference Result 846 states and 1281 transitions. [2024-12-02 05:56:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:56:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2024-12-02 05:56:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:17,811 INFO L225 Difference]: With dead ends: 846 [2024-12-02 05:56:17,811 INFO L226 Difference]: Without dead ends: 439 [2024-12-02 05:56:17,813 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 05:56:17,813 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:17,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1811 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-12-02 05:56:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2024-12-02 05:56:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 337 states have (on average 1.5222551928783383) internal successors, (513), 344 states have internal predecessors, (513), 66 states have call successors, (66), 30 states have call predecessors, (66), 33 states have return successors, (79), 65 states have call predecessors, (79), 65 states have call successors, (79) [2024-12-02 05:56:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 658 transitions. [2024-12-02 05:56:17,842 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 658 transitions. Word has length 131 [2024-12-02 05:56:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:17,843 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 658 transitions. [2024-12-02 05:56:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 05:56:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 658 transitions. [2024-12-02 05:56:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 05:56:17,846 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:17,846 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 05:56:17,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 05:56:17,846 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:17,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1483409110, now seen corresponding path program 1 times [2024-12-02 05:56:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320348872] [2024-12-02 05:56:17,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320348872] [2024-12-02 05:56:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320348872] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877533539] [2024-12-02 05:56:17,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:17,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:17,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:17,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 05:56:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:18,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 05:56:18,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:18,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:56:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:18,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877533539] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:56:18,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:56:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 05:56:18,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062036244] [2024-12-02 05:56:18,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:56:18,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 05:56:18,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:18,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 05:56:18,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 05:56:18,439 INFO L87 Difference]: Start difference. First operand 437 states and 658 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 05:56:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:18,617 INFO L93 Difference]: Finished difference Result 993 states and 1548 transitions. [2024-12-02 05:56:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 05:56:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 131 [2024-12-02 05:56:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:18,624 INFO L225 Difference]: With dead ends: 993 [2024-12-02 05:56:18,624 INFO L226 Difference]: Without dead ends: 758 [2024-12-02 05:56:18,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 05:56:18,626 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 345 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:18,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2498 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 05:56:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-12-02 05:56:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 734. [2024-12-02 05:56:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.587719298245614) internal successors, (905), 577 states have internal predecessors, (905), 130 states have call successors, (130), 30 states have call predecessors, (130), 33 states have return successors, (153), 129 states have call predecessors, (153), 129 states have call successors, (153) [2024-12-02 05:56:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1188 transitions. [2024-12-02 05:56:18,680 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1188 transitions. Word has length 131 [2024-12-02 05:56:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:18,680 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1188 transitions. [2024-12-02 05:56:18,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 05:56:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1188 transitions. [2024-12-02 05:56:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 05:56:18,685 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:18,686 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:18,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 05:56:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 05:56:18,886 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2146597838, now seen corresponding path program 1 times [2024-12-02 05:56:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986900010] [2024-12-02 05:56:18,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986900010] [2024-12-02 05:56:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986900010] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063822926] [2024-12-02 05:56:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:18,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:18,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:18,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:18,964 INFO L87 Difference]: Start difference. First operand 734 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:19,017 INFO L93 Difference]: Finished difference Result 1700 states and 2800 transitions. [2024-12-02 05:56:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:19,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-12-02 05:56:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:19,026 INFO L225 Difference]: With dead ends: 1700 [2024-12-02 05:56:19,026 INFO L226 Difference]: Without dead ends: 1035 [2024-12-02 05:56:19,029 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 05:56:19,029 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 97 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 935 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 05:56:19,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 935 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-12-02 05:56:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1027. [2024-12-02 05:56:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 799 states have (on average 1.6057571964956194) internal successors, (1283), 806 states have internal predecessors, (1283), 194 states have call successors, (194), 30 states have call predecessors, (194), 33 states have return successors, (227), 193 states have call predecessors, (227), 193 states have call successors, (227) [2024-12-02 05:56:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1704 transitions. [2024-12-02 05:56:19,093 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1704 transitions. Word has length 138 [2024-12-02 05:56:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:19,093 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1704 transitions. [2024-12-02 05:56:19,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1704 transitions. [2024-12-02 05:56:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 05:56:19,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:19,100 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:19,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 05:56:19,100 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:19,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -205402706, now seen corresponding path program 1 times [2024-12-02 05:56:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:19,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793548640] [2024-12-02 05:56:19,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793548640] [2024-12-02 05:56:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793548640] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357051547] [2024-12-02 05:56:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:19,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:19,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:19,190 INFO L87 Difference]: Start difference. First operand 1027 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:19,269 INFO L93 Difference]: Finished difference Result 2398 states and 4012 transitions. [2024-12-02 05:56:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-12-02 05:56:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:19,283 INFO L225 Difference]: With dead ends: 2398 [2024-12-02 05:56:19,283 INFO L226 Difference]: Without dead ends: 1491 [2024-12-02 05:56:19,288 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 05:56:19,289 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 95 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 926 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 05:56:19,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2024-12-02 05:56:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1483. [2024-12-02 05:56:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1160 states have (on average 1.6189655172413793) internal successors, (1878), 1167 states have internal predecessors, (1878), 289 states have call successors, (289), 30 states have call predecessors, (289), 33 states have return successors, (322), 288 states have call predecessors, (322), 288 states have call successors, (322) [2024-12-02 05:56:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2489 transitions. [2024-12-02 05:56:19,403 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2489 transitions. Word has length 139 [2024-12-02 05:56:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:19,404 INFO L471 AbstractCegarLoop]: Abstraction has 1483 states and 2489 transitions. [2024-12-02 05:56:19,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2489 transitions. [2024-12-02 05:56:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 05:56:19,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:19,415 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:56:19,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 05:56:19,415 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:19,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1394191380, now seen corresponding path program 1 times [2024-12-02 05:56:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738724809] [2024-12-02 05:56:19,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:19,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738724809] [2024-12-02 05:56:19,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738724809] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:19,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:19,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:19,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472464663] [2024-12-02 05:56:19,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:19,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:19,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:19,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:19,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:19,486 INFO L87 Difference]: Start difference. First operand 1483 states and 2489 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:19,580 INFO L93 Difference]: Finished difference Result 3417 states and 5791 transitions. [2024-12-02 05:56:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-12-02 05:56:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:19,595 INFO L225 Difference]: With dead ends: 3417 [2024-12-02 05:56:19,595 INFO L226 Difference]: Without dead ends: 2175 [2024-12-02 05:56:19,600 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 05:56:19,600 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 93 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 923 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 05:56:19,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 923 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2024-12-02 05:56:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2167. [2024-12-02 05:56:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1721 states have (on average 1.6298663567693201) internal successors, (2805), 1728 states have internal predecessors, (2805), 412 states have call successors, (412), 30 states have call predecessors, (412), 33 states have return successors, (461), 411 states have call predecessors, (461), 411 states have call successors, (461) [2024-12-02 05:56:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3678 transitions. [2024-12-02 05:56:19,726 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3678 transitions. Word has length 140 [2024-12-02 05:56:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:19,727 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3678 transitions. [2024-12-02 05:56:19,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3678 transitions. [2024-12-02 05:56:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 05:56:19,741 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:19,741 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:19,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 05:56:19,741 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:19,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash -949070257, now seen corresponding path program 1 times [2024-12-02 05:56:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966026863] [2024-12-02 05:56:19,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:19,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966026863] [2024-12-02 05:56:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966026863] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:19,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982587747] [2024-12-02 05:56:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:19,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:19,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:19,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:19,816 INFO L87 Difference]: Start difference. First operand 2167 states and 3678 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:19,935 INFO L93 Difference]: Finished difference Result 4990 states and 8542 transitions. [2024-12-02 05:56:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-12-02 05:56:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:19,957 INFO L225 Difference]: With dead ends: 4990 [2024-12-02 05:56:19,957 INFO L226 Difference]: Without dead ends: 3261 [2024-12-02 05:56:19,964 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 05:56:19,965 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 91 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 923 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 05:56:19,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 923 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2024-12-02 05:56:20,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3253. [2024-12-02 05:56:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 2628 states have (on average 1.637366818873668) internal successors, (4303), 2635 states have internal predecessors, (4303), 591 states have call successors, (591), 30 states have call predecessors, (591), 33 states have return successors, (666), 590 states have call predecessors, (666), 590 states have call successors, (666) [2024-12-02 05:56:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5560 transitions. [2024-12-02 05:56:20,170 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5560 transitions. Word has length 141 [2024-12-02 05:56:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:20,170 INFO L471 AbstractCegarLoop]: Abstraction has 3253 states and 5560 transitions. [2024-12-02 05:56:20,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5560 transitions. [2024-12-02 05:56:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 05:56:20,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:20,188 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:20,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 05:56:20,189 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:20,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -705375600, now seen corresponding path program 1 times [2024-12-02 05:56:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814853383] [2024-12-02 05:56:20,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814853383] [2024-12-02 05:56:20,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814853383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:20,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:20,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828084366] [2024-12-02 05:56:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:20,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:20,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:20,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:20,275 INFO L87 Difference]: Start difference. First operand 3253 states and 5560 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:20,428 INFO L93 Difference]: Finished difference Result 7831 states and 13464 transitions. [2024-12-02 05:56:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2024-12-02 05:56:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:20,462 INFO L225 Difference]: With dead ends: 7831 [2024-12-02 05:56:20,462 INFO L226 Difference]: Without dead ends: 5237 [2024-12-02 05:56:20,473 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 05:56:20,473 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 89 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 942 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 05:56:20,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 942 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2024-12-02 05:56:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 5229. [2024-12-02 05:56:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 4228 states have (on average 1.6319772942289499) internal successors, (6900), 4235 states have internal predecessors, (6900), 967 states have call successors, (967), 30 states have call predecessors, (967), 33 states have return successors, (1086), 966 states have call predecessors, (1086), 966 states have call successors, (1086) [2024-12-02 05:56:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 8953 transitions. [2024-12-02 05:56:20,875 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 8953 transitions. Word has length 142 [2024-12-02 05:56:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:20,875 INFO L471 AbstractCegarLoop]: Abstraction has 5229 states and 8953 transitions. [2024-12-02 05:56:20,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 8953 transitions. [2024-12-02 05:56:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 05:56:20,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:20,902 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 05:56:20,903 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1718725587, now seen corresponding path program 1 times [2024-12-02 05:56:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711685270] [2024-12-02 05:56:20,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711685270] [2024-12-02 05:56:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711685270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:20,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:20,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658996273] [2024-12-02 05:56:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:20,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:20,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:20,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:20,958 INFO L87 Difference]: Start difference. First operand 5229 states and 8953 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:21,119 INFO L93 Difference]: Finished difference Result 12840 states and 22129 transitions. [2024-12-02 05:56:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2024-12-02 05:56:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:21,163 INFO L225 Difference]: With dead ends: 12840 [2024-12-02 05:56:21,164 INFO L226 Difference]: Without dead ends: 8631 [2024-12-02 05:56:21,176 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 05:56:21,176 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 87 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 934 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 05:56:21,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2024-12-02 05:56:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 8623. [2024-12-02 05:56:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8623 states, 7016 states have (on average 1.6305587229190421) internal successors, (11440), 7023 states have internal predecessors, (11440), 1573 states have call successors, (1573), 30 states have call predecessors, (1573), 33 states have return successors, (1770), 1572 states have call predecessors, (1770), 1572 states have call successors, (1770) [2024-12-02 05:56:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8623 states to 8623 states and 14783 transitions. [2024-12-02 05:56:21,506 INFO L78 Accepts]: Start accepts. Automaton has 8623 states and 14783 transitions. Word has length 143 [2024-12-02 05:56:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:21,506 INFO L471 AbstractCegarLoop]: Abstraction has 8623 states and 14783 transitions. [2024-12-02 05:56:21,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 14783 transitions. [2024-12-02 05:56:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 05:56:21,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:21,527 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:56:21,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 05:56:21,527 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:21,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -460164014, now seen corresponding path program 1 times [2024-12-02 05:56:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:21,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60001025] [2024-12-02 05:56:21,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60001025] [2024-12-02 05:56:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60001025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:21,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874619771] [2024-12-02 05:56:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:21,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:21,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:21,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:21,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:21,582 INFO L87 Difference]: Start difference. First operand 8623 states and 14783 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:22,079 INFO L93 Difference]: Finished difference Result 22261 states and 38316 transitions. [2024-12-02 05:56:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-12-02 05:56:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:22,170 INFO L225 Difference]: With dead ends: 22261 [2024-12-02 05:56:22,170 INFO L226 Difference]: Without dead ends: 15058 [2024-12-02 05:56:22,206 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 05:56:22,206 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 85 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 933 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 05:56:22,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 933 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states. [2024-12-02 05:56:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 15050. [2024-12-02 05:56:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15050 states, 12240 states have (on average 1.6209150326797386) internal successors, (19840), 12247 states have internal predecessors, (19840), 2776 states have call successors, (2776), 30 states have call predecessors, (2776), 33 states have return successors, (3117), 2775 states have call predecessors, (3117), 2775 states have call successors, (3117) [2024-12-02 05:56:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15050 states to 15050 states and 25733 transitions. [2024-12-02 05:56:23,041 INFO L78 Accepts]: Start accepts. Automaton has 15050 states and 25733 transitions. Word has length 144 [2024-12-02 05:56:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:23,042 INFO L471 AbstractCegarLoop]: Abstraction has 15050 states and 25733 transitions. [2024-12-02 05:56:23,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 15050 states and 25733 transitions. [2024-12-02 05:56:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 05:56:23,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:23,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:23,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 05:56:23,084 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:23,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash -873557996, now seen corresponding path program 1 times [2024-12-02 05:56:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:23,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362056338] [2024-12-02 05:56:23,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:23,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362056338] [2024-12-02 05:56:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362056338] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:23,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:23,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893957693] [2024-12-02 05:56:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:23,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:23,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:23,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:23,151 INFO L87 Difference]: Start difference. First operand 15050 states and 25733 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:23,826 INFO L93 Difference]: Finished difference Result 39777 states and 68319 transitions. [2024-12-02 05:56:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2024-12-02 05:56:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:24,017 INFO L225 Difference]: With dead ends: 39777 [2024-12-02 05:56:24,017 INFO L226 Difference]: Without dead ends: 26725 [2024-12-02 05:56:24,056 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 05:56:24,057 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 83 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 926 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 05:56:24,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26725 states. [2024-12-02 05:56:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26725 to 26717. [2024-12-02 05:56:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26717 states, 21868 states have (on average 1.6162886409365282) internal successors, (35345), 21875 states have internal predecessors, (35345), 4815 states have call successors, (4815), 30 states have call predecessors, (4815), 33 states have return successors, (5430), 4814 states have call predecessors, (5430), 4814 states have call successors, (5430) [2024-12-02 05:56:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26717 states to 26717 states and 45590 transitions. [2024-12-02 05:56:25,649 INFO L78 Accepts]: Start accepts. Automaton has 26717 states and 45590 transitions. Word has length 145 [2024-12-02 05:56:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:25,650 INFO L471 AbstractCegarLoop]: Abstraction has 26717 states and 45590 transitions. [2024-12-02 05:56:25,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 26717 states and 45590 transitions. [2024-12-02 05:56:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 05:56:25,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:25,699 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 05:56:25,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 05:56:25,700 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:25,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1496623500, now seen corresponding path program 1 times [2024-12-02 05:56:25,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:25,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412390303] [2024-12-02 05:56:25,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412390303] [2024-12-02 05:56:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412390303] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825632553] [2024-12-02 05:56:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:25,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:25,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:25,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:25,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:25,773 INFO L87 Difference]: Start difference. First operand 26717 states and 45590 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:26,785 INFO L93 Difference]: Finished difference Result 72729 states and 124551 transitions. [2024-12-02 05:56:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2024-12-02 05:56:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:26,972 INFO L225 Difference]: With dead ends: 72729 [2024-12-02 05:56:26,972 INFO L226 Difference]: Without dead ends: 48705 [2024-12-02 05:56:27,025 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 05:56:27,026 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 81 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 928 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 05:56:27,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 928 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48705 states. [2024-12-02 05:56:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48705 to 48697. [2024-12-02 05:56:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48697 states, 40133 states have (on average 1.6100715122218623) internal successors, (64617), 40140 states have internal predecessors, (64617), 8530 states have call successors, (8530), 30 states have call predecessors, (8530), 33 states have return successors, (9677), 8529 states have call predecessors, (9677), 8529 states have call successors, (9677) [2024-12-02 05:56:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48697 states to 48697 states and 82824 transitions. [2024-12-02 05:56:29,289 INFO L78 Accepts]: Start accepts. Automaton has 48697 states and 82824 transitions. Word has length 146 [2024-12-02 05:56:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:29,290 INFO L471 AbstractCegarLoop]: Abstraction has 48697 states and 82824 transitions. [2024-12-02 05:56:29,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 48697 states and 82824 transitions. [2024-12-02 05:56:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 05:56:29,365 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:29,365 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:29,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 05:56:29,365 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:29,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 465433204, now seen corresponding path program 1 times [2024-12-02 05:56:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539140246] [2024-12-02 05:56:29,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:29,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 05:56:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539140246] [2024-12-02 05:56:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539140246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:56:29,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:56:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:56:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832285756] [2024-12-02 05:56:29,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:56:29,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:56:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:29,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:56:29,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:56:29,446 INFO L87 Difference]: Start difference. First operand 48697 states and 82824 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:31,060 INFO L93 Difference]: Finished difference Result 90696 states and 154594 transitions. [2024-12-02 05:56:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:56:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2024-12-02 05:56:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:31,316 INFO L225 Difference]: With dead ends: 90696 [2024-12-02 05:56:31,316 INFO L226 Difference]: Without dead ends: 90461 [2024-12-02 05:56:31,343 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 05:56:31,345 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 76 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 940 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 05:56:31,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 940 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:56:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90461 states. [2024-12-02 05:56:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90461 to 90453. [2024-12-02 05:56:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90453 states, 75090 states have (on average 1.602277267279265) internal successors, (120315), 75097 states have internal predecessors, (120315), 15329 states have call successors, (15329), 30 states have call predecessors, (15329), 33 states have return successors, (17522), 15328 states have call predecessors, (17522), 15328 states have call successors, (17522) [2024-12-02 05:56:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90453 states to 90453 states and 153166 transitions. [2024-12-02 05:56:34,395 INFO L78 Accepts]: Start accepts. Automaton has 90453 states and 153166 transitions. Word has length 147 [2024-12-02 05:56:34,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:56:34,395 INFO L471 AbstractCegarLoop]: Abstraction has 90453 states and 153166 transitions. [2024-12-02 05:56:34,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:56:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 90453 states and 153166 transitions. [2024-12-02 05:56:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 05:56:34,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:56:34,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:34,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 05:56:34,487 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:56:34,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:56:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1752349261, now seen corresponding path program 1 times [2024-12-02 05:56:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:56:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934607301] [2024-12-02 05:56:34,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:56:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 05:56:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:56:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934607301] [2024-12-02 05:56:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934607301] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:56:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965918004] [2024-12-02 05:56:35,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:56:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:56:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:56:35,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:56:35,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 05:56:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:56:35,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 05:56:35,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:56:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 05:56:35,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:56:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 05:56:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965918004] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:56:36,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:56:36,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-12-02 05:56:36,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011684541] [2024-12-02 05:56:36,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:56:36,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 05:56:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:56:36,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 05:56:36,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2024-12-02 05:56:36,015 INFO L87 Difference]: Start difference. First operand 90453 states and 153166 transitions. Second operand has 27 states, 26 states have (on average 9.423076923076923) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) [2024-12-02 05:56:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:56:49,384 INFO L93 Difference]: Finished difference Result 361054 states and 635214 transitions. [2024-12-02 05:56:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-12-02 05:56:49,384 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.423076923076923) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) Word has length 148 [2024-12-02 05:56:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:56:51,047 INFO L225 Difference]: With dead ends: 361054 [2024-12-02 05:56:51,048 INFO L226 Difference]: Without dead ends: 360841 [2024-12-02 05:56:51,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1127, Invalid=8575, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 05:56:51,151 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 4309 mSDsluCounter, 4188 mSDsCounter, 0 mSdLazyCounter, 8711 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 9856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 8711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 05:56:51,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 4412 Invalid, 9856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1145 Valid, 8711 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 05:56:51,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360841 states. [2024-12-02 05:57:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360841 to 360541. [2024-12-02 05:57:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360541 states, 299441 states have (on average 1.6030503504864064) internal successors, (480019), 299255 states have internal predecessors, (480019), 60914 states have call successors, (60914), 162 states have call predecessors, (60914), 185 states have return successors, (84884), 61139 states have call predecessors, (84884), 60908 states have call successors, (84884) [2024-12-02 05:57:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360541 states to 360541 states and 625817 transitions. [2024-12-02 05:57:04,957 INFO L78 Accepts]: Start accepts. Automaton has 360541 states and 625817 transitions. Word has length 148 [2024-12-02 05:57:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:57:04,958 INFO L471 AbstractCegarLoop]: Abstraction has 360541 states and 625817 transitions. [2024-12-02 05:57:04,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.423076923076923) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) [2024-12-02 05:57:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 360541 states and 625817 transitions. [2024-12-02 05:57:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 05:57:05,488 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:57:05,488 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:57:05,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 05:57:05,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 05:57:05,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:57:05,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:57:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -406764234, now seen corresponding path program 1 times [2024-12-02 05:57:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:57:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676024256] [2024-12-02 05:57:05,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:57:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 05:57:05,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:57:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676024256] [2024-12-02 05:57:05,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676024256] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:57:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124512256] [2024-12-02 05:57:05,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:05,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:57:05,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:57:05,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:57:05,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 05:57:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:06,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 05:57:06,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:57:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 05:57:06,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:57:06,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124512256] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:57:06,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:57:06,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 05:57:06,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121180366] [2024-12-02 05:57:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:57:06,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 05:57:06,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:57:06,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 05:57:06,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 05:57:06,458 INFO L87 Difference]: Start difference. First operand 360541 states and 625817 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:57:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:57:13,761 INFO L93 Difference]: Finished difference Result 362203 states and 628177 transitions. [2024-12-02 05:57:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 05:57:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 150 [2024-12-02 05:57:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:57:14,948 INFO L225 Difference]: With dead ends: 362203 [2024-12-02 05:57:14,948 INFO L226 Difference]: Without dead ends: 360705 [2024-12-02 05:57:15,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 144 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 05:57:15,054 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 596 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 05:57:15,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2982 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 05:57:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360705 states. [2024-12-02 05:57:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360705 to 360675. [2024-12-02 05:57:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360675 states, 299525 states have (on average 1.6029212920457392) internal successors, (480115), 299340 states have internal predecessors, (480115), 60964 states have call successors, (60964), 162 states have call predecessors, (60964), 185 states have return successors, (84945), 61196 states have call predecessors, (84945), 60958 states have call successors, (84945) [2024-12-02 05:57:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360675 states to 360675 states and 626024 transitions. [2024-12-02 05:57:30,143 INFO L78 Accepts]: Start accepts. Automaton has 360675 states and 626024 transitions. Word has length 150 [2024-12-02 05:57:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:57:30,144 INFO L471 AbstractCegarLoop]: Abstraction has 360675 states and 626024 transitions. [2024-12-02 05:57:30,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 05:57:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 360675 states and 626024 transitions. [2024-12-02 05:57:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 05:57:30,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:57:30,463 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 05:57:30,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 05:57:30,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 05:57:30,664 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:57:30,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:57:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash 930429810, now seen corresponding path program 1 times [2024-12-02 05:57:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:57:30,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882931636] [2024-12-02 05:57:30,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:57:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 05:57:30,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:57:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882931636] [2024-12-02 05:57:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882931636] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:57:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197192153] [2024-12-02 05:57:30,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:30,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:57:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:57:30,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:57:30,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 05:57:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:31,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 05:57:31,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:57:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 05:57:31,111 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:57:31,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197192153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:57:31,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:57:31,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 05:57:31,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222310237] [2024-12-02 05:57:31,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:57:31,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:57:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:57:31,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:57:31,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:57:31,113 INFO L87 Difference]: Start difference. First operand 360675 states and 626024 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:57:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:57:39,795 INFO L93 Difference]: Finished difference Result 541013 states and 943362 transitions. [2024-12-02 05:57:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:57:39,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2024-12-02 05:57:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:57:41,001 INFO L225 Difference]: With dead ends: 541013 [2024-12-02 05:57:41,001 INFO L226 Difference]: Without dead ends: 360691 [2024-12-02 05:57:41,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 05:57:41,372 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 1 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1814 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 05:57:41,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1814 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:57:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360691 states. [2024-12-02 05:57:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360691 to 360675. [2024-12-02 05:57:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360675 states, 299525 states have (on average 1.6029146148067774) internal successors, (480113), 299340 states have internal predecessors, (480113), 60964 states have call successors, (60964), 162 states have call predecessors, (60964), 185 states have return successors, (84945), 61196 states have call predecessors, (84945), 60958 states have call successors, (84945) [2024-12-02 05:57:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360675 states to 360675 states and 626022 transitions. [2024-12-02 05:57:55,281 INFO L78 Accepts]: Start accepts. Automaton has 360675 states and 626022 transitions. Word has length 150 [2024-12-02 05:57:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:57:55,281 INFO L471 AbstractCegarLoop]: Abstraction has 360675 states and 626022 transitions. [2024-12-02 05:57:55,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 05:57:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 360675 states and 626022 transitions. [2024-12-02 05:57:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 05:57:55,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:57:55,624 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] [2024-12-02 05:57:55,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 05:57:55,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 05:57:55,825 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:57:55,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:57:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash 955068736, now seen corresponding path program 1 times [2024-12-02 05:57:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:57:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359254273] [2024-12-02 05:57:55,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:57:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 05:57:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:57:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359254273] [2024-12-02 05:57:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359254273] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:57:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711994082] [2024-12-02 05:57:56,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:56,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:57:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:57:56,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:57:56,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 05:57:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:56,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 05:57:56,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:57:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 05:57:57,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:57:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711994082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:57:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:57:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2024-12-02 05:57:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079723532] [2024-12-02 05:57:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:57:57,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 05:57:57,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:57:57,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 05:57:57,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-12-02 05:57:57,021 INFO L87 Difference]: Start difference. First operand 360675 states and 626022 transitions. Second operand has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 05:58:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:58:13,626 INFO L93 Difference]: Finished difference Result 716849 states and 1265870 transitions. [2024-12-02 05:58:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 05:58:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 151 [2024-12-02 05:58:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:58:16,448 INFO L225 Difference]: With dead ends: 716849 [2024-12-02 05:58:16,448 INFO L226 Difference]: Without dead ends: 716011 [2024-12-02 05:58:16,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-12-02 05:58:16,655 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 885 mSDsluCounter, 4227 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 4671 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 05:58:16,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 4671 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 05:58:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716011 states. [2024-12-02 05:58:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716011 to 715575. [2024-12-02 05:58:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715575 states, 594519 states have (on average 1.604071526730012) internal successors, (953651), 593814 states have internal predecessors, (953651), 120640 states have call successors, (120640), 360 states have call predecessors, (120640), 415 states have return successors, (189711), 121456 states have call predecessors, (189711), 120626 states have call successors, (189711) [2024-12-02 05:58:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715575 states to 715575 states and 1264002 transitions. [2024-12-02 05:58:48,605 INFO L78 Accepts]: Start accepts. Automaton has 715575 states and 1264002 transitions. Word has length 151 [2024-12-02 05:58:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:58:48,606 INFO L471 AbstractCegarLoop]: Abstraction has 715575 states and 1264002 transitions. [2024-12-02 05:58:48,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 10 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 05:58:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 715575 states and 1264002 transitions. [2024-12-02 05:58:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 05:58:49,531 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:58:49,531 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] [2024-12-02 05:58:49,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 05:58:49,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 05:58:49,732 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:58:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:58:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -69625185, now seen corresponding path program 1 times [2024-12-02 05:58:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:58:49,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004221807] [2024-12-02 05:58:49,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:58:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:58:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:58:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 05:58:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:58:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004221807] [2024-12-02 05:58:49,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004221807] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:58:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146623327] [2024-12-02 05:58:49,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:58:49,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:58:49,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:58:49,959 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:58:49,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 05:58:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:58:50,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 05:58:50,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:58:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 05:58:50,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:58:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 05:58:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146623327] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 05:58:50,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 05:58:50,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9, 12] total 21 [2024-12-02 05:58:50,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585265679] [2024-12-02 05:58:50,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:58:50,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 05:58:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:58:50,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 05:58:50,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-12-02 05:58:50,780 INFO L87 Difference]: Start difference. First operand 715575 states and 1264002 transitions. Second operand has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 05:59:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:59:09,827 INFO L93 Difference]: Finished difference Result 718661 states and 1268470 transitions. [2024-12-02 05:59:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 05:59:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 151 [2024-12-02 05:59:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:59:13,422 INFO L225 Difference]: With dead ends: 718661 [2024-12-02 05:59:13,422 INFO L226 Difference]: Without dead ends: 716143 [2024-12-02 05:59:13,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-12-02 05:59:13,729 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 740 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 05:59:13,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3834 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 05:59:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716143 states. [2024-12-02 05:59:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716143 to 715687. [2024-12-02 05:59:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715687 states, 594575 states have (on average 1.6040146323003825) internal successors, (953707), 593898 states have internal predecessors, (953707), 120668 states have call successors, (120668), 360 states have call predecessors, (120668), 443 states have return successors, (189865), 121484 states have call predecessors, (189865), 120654 states have call successors, (189865) [2024-12-02 05:59:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715687 states to 715687 states and 1264240 transitions. [2024-12-02 05:59:46,783 INFO L78 Accepts]: Start accepts. Automaton has 715687 states and 1264240 transitions. Word has length 151 [2024-12-02 05:59:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:59:46,783 INFO L471 AbstractCegarLoop]: Abstraction has 715687 states and 1264240 transitions. [2024-12-02 05:59:46,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-12-02 05:59:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 715687 states and 1264240 transitions. [2024-12-02 05:59:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 05:59:47,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:59:47,435 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] [2024-12-02 05:59:47,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 05:59:47,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 05:59:47,636 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:59:47,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:59:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash -478449410, now seen corresponding path program 1 times [2024-12-02 05:59:47,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:59:47,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841798239] [2024-12-02 05:59:47,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:59:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:59:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:59:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 05:59:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:59:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841798239] [2024-12-02 05:59:47,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841798239] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:59:47,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128924603] [2024-12-02 05:59:47,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:59:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:59:47,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:59:47,824 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:59:47,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef163238-7535-4eaa-b6fd-f3e5f72d47da/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 05:59:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:59:48,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 05:59:48,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:59:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 05:59:48,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:59:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128924603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:59:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:59:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2024-12-02 05:59:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553950499] [2024-12-02 05:59:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:59:48,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 05:59:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:59:48,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 05:59:48,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 05:59:48,217 INFO L87 Difference]: Start difference. First operand 715687 states and 1264240 transitions. Second operand has 9 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 06:00:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:00:06,970 INFO L93 Difference]: Finished difference Result 719189 states and 1269313 transitions. [2024-12-02 06:00:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:00:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 151 [2024-12-02 06:00:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:00:09,915 INFO L225 Difference]: With dead ends: 719189 [2024-12-02 06:00:09,915 INFO L226 Difference]: Without dead ends: 715647 [2024-12-02 06:00:10,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:00:10,132 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 553 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:00:10,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 2950 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:00:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715647 states.