./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b1bbd85396e3eb1de7562114efc1b104d28592355874c6166c296894ed6f999d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:39,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:39,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:39,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:39,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:39,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:39,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:39,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:39,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:39,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:39,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:39,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:39,403 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:39,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:39,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:39,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:39,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:39,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:39,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:39,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:39,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:39,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:39,410 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:39,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:39,411 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:39,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:39,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:39,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:39,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:39,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:39,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:39,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:39,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:39,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:39,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:39,418 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:39,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:39,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:39,419 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:39,419 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1bbd85396e3eb1de7562114efc1b104d28592355874c6166c296894ed6f999d [2023-11-06 21:53:39,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:39,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:39,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:39,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:39,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:39,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/product-lines/email_spec8_product15.cil.c [2023-11-06 21:53:42,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:43,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:43,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/sv-benchmarks/c/product-lines/email_spec8_product15.cil.c [2023-11-06 21:53:43,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/data/0f02e888b/1f690bdec56f4737a6c0c705d2078118/FLAGdf7a58295 [2023-11-06 21:53:43,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/data/0f02e888b/1f690bdec56f4737a6c0c705d2078118 [2023-11-06 21:53:43,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:43,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:43,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:43,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:43,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:43,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:43" (1/1) ... [2023-11-06 21:53:43,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22164463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:43, skipping insertion in model container [2023-11-06 21:53:43,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:43" (1/1) ... [2023-11-06 21:53:43,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:44,398 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/sv-benchmarks/c/product-lines/email_spec8_product15.cil.c[44955,44968] [2023-11-06 21:53:44,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:44,509 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:44,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-11-06 21:53:44,523 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [460] [2023-11-06 21:53:44,523 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [750] [2023-11-06 21:53:44,524 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1824] [2023-11-06 21:53:44,524 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [2112] [2023-11-06 21:53:44,525 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2155] [2023-11-06 21:53:44,525 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2164] [2023-11-06 21:53:44,526 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2268] [2023-11-06 21:53:44,526 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2484] [2023-11-06 21:53:44,526 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2501] [2023-11-06 21:53:44,527 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2867] [2023-11-06 21:53:44,666 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/sv-benchmarks/c/product-lines/email_spec8_product15.cil.c[44955,44968] [2023-11-06 21:53:44,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:44,749 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:53:44,759 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:44,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44 WrapperNode [2023-11-06 21:53:44,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:44,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:44,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:44,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:44,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,891 INFO L138 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 55, calls inlined = 46, statements flattened = 899 [2023-11-06 21:53:44,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:44,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:44,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:44,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:44,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:44,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:45,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:45,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:45,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:45,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:45,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:45,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:45,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:45,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (1/1) ... [2023-11-06 21:53:45,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:45,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:45,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-06 21:53:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-06 21:53:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-06 21:53:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-06 21:53:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-06 21:53:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-06 21:53:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-06 21:53:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-06 21:53:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-06 21:53:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-06 21:53:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-06 21:53:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-06 21:53:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-06 21:53:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-06 21:53:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-06 21:53:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-06 21:53:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-06 21:53:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-06 21:53:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-06 21:53:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-06 21:53:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-06 21:53:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-06 21:53:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-06 21:53:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-06 21:53:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-06 21:53:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-06 21:53:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-06 21:53:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-06 21:53:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-06 21:53:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-06 21:53:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-06 21:53:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-06 21:53:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-06 21:53:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-06 21:53:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-06 21:53:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:45,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:45,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:46,503 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:46,516 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:46,517 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:53:46,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:46 BoogieIcfgContainer [2023-11-06 21:53:46,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:46,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:46,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:46,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:46,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:43" (1/3) ... [2023-11-06 21:53:46,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:46, skipping insertion in model container [2023-11-06 21:53:46,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:44" (2/3) ... [2023-11-06 21:53:46,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:46, skipping insertion in model container [2023-11-06 21:53:46,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:46" (3/3) ... [2023-11-06 21:53:46,531 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product15.cil.c [2023-11-06 21:53:46,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:46,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:53:46,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:46,637 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1a77bea5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:46,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:53:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 21:53:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 21:53:46,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:46,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:53:46,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:46,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -424898417, now seen corresponding path program 1 times [2023-11-06 21:53:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:46,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862760299] [2023-11-06 21:53:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:46,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:53:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 21:53:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:53:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 21:53:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-06 21:53:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 21:53:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 21:53:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 21:53:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:53:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862760299] [2023-11-06 21:53:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862760299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071532716] [2023-11-06 21:53:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:47,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:47,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:53:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:48,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:53:48,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:53:48,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071532716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:48,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:48,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-06 21:53:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718806112] [2023-11-06 21:53:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:48,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:53:48,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:53:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:53:48,353 INFO L87 Difference]: Start difference. First operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:48,412 INFO L93 Difference]: Finished difference Result 420 states and 620 transitions. [2023-11-06 21:53:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:53:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2023-11-06 21:53:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:48,432 INFO L225 Difference]: With dead ends: 420 [2023-11-06 21:53:48,433 INFO L226 Difference]: Without dead ends: 280 [2023-11-06 21:53:48,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:53:48,446 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-06 21:53:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-11-06 21:53:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.5363636363636364) internal successors, (338), 223 states have internal predecessors, (338), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 21:53:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 421 transitions. [2023-11-06 21:53:48,532 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 421 transitions. Word has length 89 [2023-11-06 21:53:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:48,534 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 421 transitions. [2023-11-06 21:53:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 421 transitions. [2023-11-06 21:53:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 21:53:48,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:48,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:53:48,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:48,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 21:53:48,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:48,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1235825051, now seen corresponding path program 1 times [2023-11-06 21:53:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803171195] [2023-11-06 21:53:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:48,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:53:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 21:53:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:53:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 21:53:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 21:53:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 21:53:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 21:53:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:53:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:53:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803171195] [2023-11-06 21:53:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803171195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960201526] [2023-11-06 21:53:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:49,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:53:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:53:49,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:53:49,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960201526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:49,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-06 21:53:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276304508] [2023-11-06 21:53:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:53:49,731 INFO L87 Difference]: Start difference. First operand 280 states and 421 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:49,813 INFO L93 Difference]: Finished difference Result 410 states and 601 transitions. [2023-11-06 21:53:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:49,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2023-11-06 21:53:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:49,823 INFO L225 Difference]: With dead ends: 410 [2023-11-06 21:53:49,824 INFO L226 Difference]: Without dead ends: 283 [2023-11-06 21:53:49,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:53:49,832 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:49,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-06 21:53:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2023-11-06 21:53:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.5315315315315314) internal successors, (340), 225 states have internal predecessors, (340), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 21:53:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 423 transitions. [2023-11-06 21:53:49,896 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 423 transitions. Word has length 90 [2023-11-06 21:53:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:49,900 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 423 transitions. [2023-11-06 21:53:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 423 transitions. [2023-11-06 21:53:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 21:53:49,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:49,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:53:49,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:50,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:50,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1363663514, now seen corresponding path program 1 times [2023-11-06 21:53:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:50,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582305471] [2023-11-06 21:53:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:53:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 21:53:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:53:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 21:53:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 21:53:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 21:53:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 21:53:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:53:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:53:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582305471] [2023-11-06 21:53:50,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582305471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:50,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469798737] [2023-11-06 21:53:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:50,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:50,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:50,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:50,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:53:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:53:50,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:53:50,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469798737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:50,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-06 21:53:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452811211] [2023-11-06 21:53:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:50,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:53:50,901 INFO L87 Difference]: Start difference. First operand 282 states and 423 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:50,942 INFO L93 Difference]: Finished difference Result 594 states and 905 transitions. [2023-11-06 21:53:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-11-06 21:53:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:50,947 INFO L225 Difference]: With dead ends: 594 [2023-11-06 21:53:50,947 INFO L226 Difference]: Without dead ends: 339 [2023-11-06 21:53:50,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:53:50,951 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 107 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 815 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 [2023-11-06 21:53:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 815 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-06 21:53:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 331. [2023-11-06 21:53:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 260 states have (on average 1.5461538461538462) internal successors, (402), 263 states have internal predecessors, (402), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-06 21:53:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 507 transitions. [2023-11-06 21:53:51,004 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 507 transitions. Word has length 99 [2023-11-06 21:53:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:51,005 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 507 transitions. [2023-11-06 21:53:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:53:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 507 transitions. [2023-11-06 21:53:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 21:53:51,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:51,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:53:51,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:51,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:51,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1065487752, now seen corresponding path program 1 times [2023-11-06 21:53:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:51,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406866234] [2023-11-06 21:53:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:51,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:53:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 21:53:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 21:53:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 21:53:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 21:53:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 21:53:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:53:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 21:53:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:53:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406866234] [2023-11-06 21:53:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406866234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424271536] [2023-11-06 21:53:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:51,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:51,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:51,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:51,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:53:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:53:51,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 21:53:52,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424271536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:52,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:52,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-06 21:53:52,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071376423] [2023-11-06 21:53:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:52,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:53:52,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:52,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:53:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:53:52,025 INFO L87 Difference]: Start difference. First operand 331 states and 507 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:52,143 INFO L93 Difference]: Finished difference Result 653 states and 1004 transitions. [2023-11-06 21:53:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:53:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2023-11-06 21:53:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:52,153 INFO L225 Difference]: With dead ends: 653 [2023-11-06 21:53:52,154 INFO L226 Difference]: Without dead ends: 333 [2023-11-06 21:53:52,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:53:52,160 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 8 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:52,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1637 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-06 21:53:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-11-06 21:53:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 261 states have (on average 1.5440613026819923) internal successors, (403), 265 states have internal predecessors, (403), 53 states have call successors, (53), 17 states have call predecessors, (53), 18 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2023-11-06 21:53:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 510 transitions. [2023-11-06 21:53:52,199 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 510 transitions. Word has length 100 [2023-11-06 21:53:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:52,200 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 510 transitions. [2023-11-06 21:53:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 510 transitions. [2023-11-06 21:53:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-06 21:53:52,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:52,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-06 21:53:52,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:52,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:52,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:52,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1218296481, now seen corresponding path program 1 times [2023-11-06 21:53:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262421942] [2023-11-06 21:53:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:53:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 21:53:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 21:53:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 21:53:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 21:53:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 21:53:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:53:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 21:53:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:53:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262421942] [2023-11-06 21:53:52,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262421942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:52,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160569083] [2023-11-06 21:53:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:52,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:53:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:53:53,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 21:53:53,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:53,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160569083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:53,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:53,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-06 21:53:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319909684] [2023-11-06 21:53:53,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:53:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:53:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:53:53,219 INFO L87 Difference]: Start difference. First operand 333 states and 510 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:53,330 INFO L93 Difference]: Finished difference Result 655 states and 1009 transitions. [2023-11-06 21:53:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:53:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-11-06 21:53:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:53,335 INFO L225 Difference]: With dead ends: 655 [2023-11-06 21:53:53,335 INFO L226 Difference]: Without dead ends: 335 [2023-11-06 21:53:53,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:53:53,338 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 8 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:53,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1623 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-06 21:53:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-11-06 21:53:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-06 21:53:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 516 transitions. [2023-11-06 21:53:53,368 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 516 transitions. Word has length 101 [2023-11-06 21:53:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:53,371 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 516 transitions. [2023-11-06 21:53:53,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 516 transitions. [2023-11-06 21:53:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 21:53:53,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:53,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:53,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:53,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:53,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:53,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash 911760390, now seen corresponding path program 1 times [2023-11-06 21:53:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:53,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511924769] [2023-11-06 21:53:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:53:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:53:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 21:53:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 21:53:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:53:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 21:53:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 21:53:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 21:53:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:53:53,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511924769] [2023-11-06 21:53:53,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511924769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:53,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:53:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852927875] [2023-11-06 21:53:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:53,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:53:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:53:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:53:53,882 INFO L87 Difference]: Start difference. First operand 335 states and 516 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:56,258 INFO L93 Difference]: Finished difference Result 740 states and 1142 transitions. [2023-11-06 21:53:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:53:56,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2023-11-06 21:53:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:56,263 INFO L225 Difference]: With dead ends: 740 [2023-11-06 21:53:56,264 INFO L226 Difference]: Without dead ends: 428 [2023-11-06 21:53:56,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:53:56,266 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 868 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:56,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1103 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 21:53:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-06 21:53:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 335. [2023-11-06 21:53:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-06 21:53:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 515 transitions. [2023-11-06 21:53:56,344 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 515 transitions. Word has length 102 [2023-11-06 21:53:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:56,344 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 515 transitions. [2023-11-06 21:53:56,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 515 transitions. [2023-11-06 21:53:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 21:53:56,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:56,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:56,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:53:56,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:56,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash -257413121, now seen corresponding path program 2 times [2023-11-06 21:53:56,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489857203] [2023-11-06 21:53:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:53:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:53:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 21:53:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 21:53:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:53:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 21:53:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 21:53:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 21:53:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:53:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489857203] [2023-11-06 21:53:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489857203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:53:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119414696] [2023-11-06 21:53:56,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:53:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:53:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:53:56,615 INFO L87 Difference]: Start difference. First operand 335 states and 515 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:58,769 INFO L93 Difference]: Finished difference Result 742 states and 1145 transitions. [2023-11-06 21:53:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:53:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2023-11-06 21:53:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:58,775 INFO L225 Difference]: With dead ends: 742 [2023-11-06 21:53:58,775 INFO L226 Difference]: Without dead ends: 430 [2023-11-06 21:53:58,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:53:58,778 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 863 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:58,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1103 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 21:53:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-06 21:53:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2023-11-06 21:53:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2023-11-06 21:53:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 518 transitions. [2023-11-06 21:53:58,839 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 518 transitions. Word has length 103 [2023-11-06 21:53:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:58,839 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 518 transitions. [2023-11-06 21:53:58,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 21:53:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 518 transitions. [2023-11-06 21:53:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 21:53:58,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:58,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:58,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:53:58,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:58,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:58,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1904686847, now seen corresponding path program 1 times [2023-11-06 21:53:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:58,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983589965] [2023-11-06 21:53:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:58,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:53:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:53:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:53:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:53:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:53:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:53:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 21:53:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:53:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 21:53:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 21:53:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:53:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:53:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983589965] [2023-11-06 21:53:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983589965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:59,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:53:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731321801] [2023-11-06 21:53:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:53:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:53:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:53:59,158 INFO L87 Difference]: Start difference. First operand 337 states and 518 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 21:54:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:02,111 INFO L93 Difference]: Finished difference Result 740 states and 1140 transitions. [2023-11-06 21:54:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:54:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2023-11-06 21:54:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:02,118 INFO L225 Difference]: With dead ends: 740 [2023-11-06 21:54:02,118 INFO L226 Difference]: Without dead ends: 430 [2023-11-06 21:54:02,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:54:02,123 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 873 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:02,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1524 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 21:54:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-06 21:54:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2023-11-06 21:54:02,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-06 21:54:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 517 transitions. [2023-11-06 21:54:02,178 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 517 transitions. Word has length 104 [2023-11-06 21:54:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 517 transitions. [2023-11-06 21:54:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 21:54:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 517 transitions. [2023-11-06 21:54:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-06 21:54:02,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:02,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:02,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:02,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:02,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash -194989370, now seen corresponding path program 2 times [2023-11-06 21:54:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646111212] [2023-11-06 21:54:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 21:54:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 21:54:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:54:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 21:54:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 21:54:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:54:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646111212] [2023-11-06 21:54:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646111212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:02,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:54:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611128384] [2023-11-06 21:54:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:02,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:54:02,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:54:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:54:02,533 INFO L87 Difference]: Start difference. First operand 337 states and 517 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 21:54:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:05,653 INFO L93 Difference]: Finished difference Result 742 states and 1146 transitions. [2023-11-06 21:54:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:54:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2023-11-06 21:54:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:05,659 INFO L225 Difference]: With dead ends: 742 [2023-11-06 21:54:05,659 INFO L226 Difference]: Without dead ends: 432 [2023-11-06 21:54:05,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:54:05,662 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 868 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:05,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1524 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 21:54:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-06 21:54:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 339. [2023-11-06 21:54:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.5378787878787878) internal successors, (406), 271 states have internal predecessors, (406), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-06 21:54:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 523 transitions. [2023-11-06 21:54:05,705 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 523 transitions. Word has length 105 [2023-11-06 21:54:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:05,705 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 523 transitions. [2023-11-06 21:54:05,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 21:54:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 523 transitions. [2023-11-06 21:54:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 21:54:05,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:05,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:54:05,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:05,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 816721852, now seen corresponding path program 1 times [2023-11-06 21:54:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744720332] [2023-11-06 21:54:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 21:54:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:54:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 21:54:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:54:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 21:54:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 21:54:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744720332] [2023-11-06 21:54:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744720332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674560821] [2023-11-06 21:54:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:06,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:54:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:06,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:54:06,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:06,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674560821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:06,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-06 21:54:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783425539] [2023-11-06 21:54:06,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:54:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:54:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:54:06,676 INFO L87 Difference]: Start difference. First operand 339 states and 523 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-06 21:54:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:10,007 INFO L93 Difference]: Finished difference Result 1092 states and 1778 transitions. [2023-11-06 21:54:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 21:54:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 106 [2023-11-06 21:54:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:10,019 INFO L225 Difference]: With dead ends: 1092 [2023-11-06 21:54:10,019 INFO L226 Difference]: Without dead ends: 784 [2023-11-06 21:54:10,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-06 21:54:10,025 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1835 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:10,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 1844 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 21:54:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-11-06 21:54:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 667. [2023-11-06 21:54:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 528 states have (on average 1.5852272727272727) internal successors, (837), 535 states have internal predecessors, (837), 117 states have call successors, (117), 17 states have call predecessors, (117), 21 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2023-11-06 21:54:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1092 transitions. [2023-11-06 21:54:10,138 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1092 transitions. Word has length 106 [2023-11-06 21:54:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:10,138 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1092 transitions. [2023-11-06 21:54:10,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-06 21:54:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1092 transitions. [2023-11-06 21:54:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:54:10,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:10,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:54:10,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:10,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_449507a9-c34e-445b-873d-08f71be75f54/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:10,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:10,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash -725397729, now seen corresponding path program 1 times [2023-11-06 21:54:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:10,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477203275] [2023-11-06 21:54:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:54:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 21:54:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 21:54:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 21:54:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:54:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477203275] [2023-11-06 21:54:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477203275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437729656] [2023-11-06 21:54:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:10,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:10,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:10,529 INFO L87 Difference]: Start difference. First operand 667 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:12,319 INFO L93 Difference]: Finished difference Result 1657 states and 2777 transitions. [2023-11-06 21:54:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2023-11-06 21:54:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:12,330 INFO L225 Difference]: With dead ends: 1657 [2023-11-06 21:54:12,330 INFO L226 Difference]: Without dead ends: 1068 [2023-11-06 21:54:12,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:12,335 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 961 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:12,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 860 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:54:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-06 21:54:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 967. [2023-11-06 21:54:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 764 states have (on average 1.5994764397905759) internal successors, (1222), 771 states have internal predecessors, (1222), 181 states have call successors, (181), 17 states have call predecessors, (181), 21 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2023-11-06 21:54:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1615 transitions. [2023-11-06 21:54:12,447 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1615 transitions. Word has length 109 [2023-11-06 21:54:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:12,447 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1615 transitions. [2023-11-06 21:54:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1615 transitions. [2023-11-06 21:54:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 21:54:12,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:12,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:12,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:54:12,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:12,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1316821944, now seen corresponding path program 1 times [2023-11-06 21:54:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370007692] [2023-11-06 21:54:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:12,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 21:54:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 21:54:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:54:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 21:54:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 21:54:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:12,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370007692] [2023-11-06 21:54:12,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370007692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:12,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:12,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454451478] [2023-11-06 21:54:12,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:12,658 INFO L87 Difference]: Start difference. First operand 967 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:14,557 INFO L93 Difference]: Finished difference Result 2397 states and 4057 transitions. [2023-11-06 21:54:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:14,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2023-11-06 21:54:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:14,574 INFO L225 Difference]: With dead ends: 2397 [2023-11-06 21:54:14,574 INFO L226 Difference]: Without dead ends: 1561 [2023-11-06 21:54:14,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:14,581 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 959 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:14,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 843 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:54:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-11-06 21:54:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1460. [2023-11-06 21:54:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1162 states have (on average 1.604130808950086) internal successors, (1864), 1169 states have internal predecessors, (1864), 276 states have call successors, (276), 17 states have call predecessors, (276), 21 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2023-11-06 21:54:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2447 transitions. [2023-11-06 21:54:14,736 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2447 transitions. Word has length 110 [2023-11-06 21:54:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2447 transitions. [2023-11-06 21:54:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2447 transitions. [2023-11-06 21:54:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 21:54:14,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:14,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:54:14,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:54:14,748 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:14,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 15321997, now seen corresponding path program 1 times [2023-11-06 21:54:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:14,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513748868] [2023-11-06 21:54:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:14,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:54:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 21:54:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 21:54:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:54:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 21:54:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:14,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513748868] [2023-11-06 21:54:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513748868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:14,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:14,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:14,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18938724] [2023-11-06 21:54:14,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:14,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:14,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:14,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:14,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:14,923 INFO L87 Difference]: Start difference. First operand 1460 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:16,696 INFO L93 Difference]: Finished difference Result 3499 states and 5975 transitions. [2023-11-06 21:54:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2023-11-06 21:54:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:16,724 INFO L225 Difference]: With dead ends: 3499 [2023-11-06 21:54:16,725 INFO L226 Difference]: Without dead ends: 2305 [2023-11-06 21:54:16,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:16,735 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 957 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:16,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 805 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:54:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2023-11-06 21:54:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2204. [2023-11-06 21:54:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1783 states have (on average 1.6079641054402691) internal successors, (2867), 1790 states have internal predecessors, (2867), 399 states have call successors, (399), 17 states have call predecessors, (399), 21 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2023-11-06 21:54:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3712 transitions. [2023-11-06 21:54:17,006 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3712 transitions. Word has length 111 [2023-11-06 21:54:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:17,006 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 3712 transitions. [2023-11-06 21:54:17,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3712 transitions. [2023-11-06 21:54:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:54:17,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:17,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:54:17,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:54:17,019 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:17,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1908613625, now seen corresponding path program 1 times [2023-11-06 21:54:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95191596] [2023-11-06 21:54:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 21:54:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 21:54:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 21:54:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 21:54:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 21:54:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95191596] [2023-11-06 21:54:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95191596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954295141] [2023-11-06 21:54:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:17,177 INFO L87 Difference]: Start difference. First operand 2204 states and 3712 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:19,089 INFO L93 Difference]: Finished difference Result 5208 states and 8955 transitions. [2023-11-06 21:54:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:19,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2023-11-06 21:54:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:19,126 INFO L225 Difference]: With dead ends: 5208 [2023-11-06 21:54:19,126 INFO L226 Difference]: Without dead ends: 3489 [2023-11-06 21:54:19,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:19,138 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 955 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:19,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 805 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:54:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2023-11-06 21:54:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3388. [2023-11-06 21:54:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2788 states have (on average 1.6101147776183644) internal successors, (4489), 2795 states have internal predecessors, (4489), 578 states have call successors, (578), 17 states have call predecessors, (578), 21 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2023-11-06 21:54:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5718 transitions. [2023-11-06 21:54:19,621 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5718 transitions. Word has length 112 [2023-11-06 21:54:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:19,622 INFO L495 AbstractCegarLoop]: Abstraction has 3388 states and 5718 transitions. [2023-11-06 21:54:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5718 transitions. [2023-11-06 21:54:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:54:19,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:19,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:54:19,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:19,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash -593063639, now seen corresponding path program 1 times [2023-11-06 21:54:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388853679] [2023-11-06 21:54:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 21:54:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 21:54:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:54:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 21:54:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 21:54:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388853679] [2023-11-06 21:54:19,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388853679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:19,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:19,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943135089] [2023-11-06 21:54:19,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:19,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:19,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:19,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:19,789 INFO L87 Difference]: Start difference. First operand 3388 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:21,802 INFO L93 Difference]: Finished difference Result 8281 states and 14271 transitions. [2023-11-06 21:54:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2023-11-06 21:54:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:21,851 INFO L225 Difference]: With dead ends: 8281 [2023-11-06 21:54:21,851 INFO L226 Difference]: Without dead ends: 5630 [2023-11-06 21:54:21,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:21,864 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 953 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:21,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 818 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:54:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2023-11-06 21:54:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5529. [2023-11-06 21:54:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4553 states have (on average 1.6022402811333187) internal successors, (7295), 4560 states have internal predecessors, (7295), 954 states have call successors, (954), 17 states have call predecessors, (954), 21 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2023-11-06 21:54:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 9320 transitions. [2023-11-06 21:54:22,615 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 9320 transitions. Word has length 113 [2023-11-06 21:54:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:22,615 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 9320 transitions. [2023-11-06 21:54:22,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 9320 transitions. [2023-11-06 21:54:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 21:54:22,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:22,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:54:22,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:54:22,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:22,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash -38691747, now seen corresponding path program 1 times [2023-11-06 21:54:22,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632338558] [2023-11-06 21:54:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:22,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 21:54:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:54:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:54:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-06 21:54:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 21:54:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632338558] [2023-11-06 21:54:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632338558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208471762] [2023-11-06 21:54:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:22,796 INFO L87 Difference]: Start difference. First operand 5529 states and 9320 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:25,272 INFO L93 Difference]: Finished difference Result 13703 states and 23572 transitions. [2023-11-06 21:54:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2023-11-06 21:54:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:25,368 INFO L225 Difference]: With dead ends: 13703 [2023-11-06 21:54:25,368 INFO L226 Difference]: Without dead ends: 9313 [2023-11-06 21:54:25,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:25,391 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 951 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:25,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 850 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:54:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2023-11-06 21:54:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9212. [2023-11-06 21:54:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9212 states, 7630 states have (on average 1.599213630406291) internal successors, (12202), 7637 states have internal predecessors, (12202), 1560 states have call successors, (1560), 17 states have call predecessors, (1560), 21 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2023-11-06 21:54:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9212 states to 9212 states and 15517 transitions. [2023-11-06 21:54:26,505 INFO L78 Accepts]: Start accepts. Automaton has 9212 states and 15517 transitions. Word has length 114 [2023-11-06 21:54:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:26,506 INFO L495 AbstractCegarLoop]: Abstraction has 9212 states and 15517 transitions. [2023-11-06 21:54:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9212 states and 15517 transitions. [2023-11-06 21:54:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 21:54:26,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:26,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:54:26,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:26,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1889380491, now seen corresponding path program 1 times [2023-11-06 21:54:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317245659] [2023-11-06 21:54:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 21:54:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 21:54:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 21:54:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 21:54:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 21:54:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317245659] [2023-11-06 21:54:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317245659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263211526] [2023-11-06 21:54:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:26,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:26,691 INFO L87 Difference]: Start difference. First operand 9212 states and 15517 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:29,611 INFO L93 Difference]: Finished difference Result 23887 states and 41013 transitions. [2023-11-06 21:54:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:29,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2023-11-06 21:54:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:29,701 INFO L225 Difference]: With dead ends: 23887 [2023-11-06 21:54:29,702 INFO L226 Difference]: Without dead ends: 16266 [2023-11-06 21:54:29,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:29,738 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 949 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:29,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 842 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 21:54:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2023-11-06 21:54:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 16165. [2023-11-06 21:54:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16165 states, 13380 states have (on average 1.5898355754857998) internal successors, (21272), 13387 states have internal predecessors, (21272), 2763 states have call successors, (2763), 17 states have call predecessors, (2763), 21 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2023-11-06 21:54:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16165 states to 16165 states and 27137 transitions. [2023-11-06 21:54:31,412 INFO L78 Accepts]: Start accepts. Automaton has 16165 states and 27137 transitions. Word has length 115 [2023-11-06 21:54:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 16165 states and 27137 transitions. [2023-11-06 21:54:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 16165 states and 27137 transitions. [2023-11-06 21:54:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:54:31,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:31,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:31,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:54:31,440 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:31,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash -550230466, now seen corresponding path program 1 times [2023-11-06 21:54:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136424073] [2023-11-06 21:54:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 21:54:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 21:54:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 21:54:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:54:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 21:54:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:31,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136424073] [2023-11-06 21:54:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136424073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727103813] [2023-11-06 21:54:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:31,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:31,585 INFO L87 Difference]: Start difference. First operand 16165 states and 27137 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:35,195 INFO L93 Difference]: Finished difference Result 42853 states and 73410 transitions. [2023-11-06 21:54:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2023-11-06 21:54:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:35,354 INFO L225 Difference]: With dead ends: 42853 [2023-11-06 21:54:35,355 INFO L226 Difference]: Without dead ends: 28921 [2023-11-06 21:54:35,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:35,401 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 947 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:35,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 809 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 21:54:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28921 states. [2023-11-06 21:54:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28921 to 28820. [2023-11-06 21:54:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28820 states, 23996 states have (on average 1.585222537089515) internal successors, (38039), 24003 states have internal predecessors, (38039), 4802 states have call successors, (4802), 17 states have call predecessors, (4802), 21 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2023-11-06 21:54:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28820 states to 28820 states and 48256 transitions. [2023-11-06 21:54:37,963 INFO L78 Accepts]: Start accepts. Automaton has 28820 states and 48256 transitions. Word has length 116 [2023-11-06 21:54:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:37,963 INFO L495 AbstractCegarLoop]: Abstraction has 28820 states and 48256 transitions. [2023-11-06 21:54:37,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 28820 states and 48256 transitions. [2023-11-06 21:54:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:54:37,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:37,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:37,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:54:37,993 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:37,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:37,994 INFO L85 PathProgramCache]: Analyzing trace with hash 538828877, now seen corresponding path program 1 times [2023-11-06 21:54:37,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:37,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761712278] [2023-11-06 21:54:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 21:54:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 21:54:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 21:54:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 21:54:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 21:54:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761712278] [2023-11-06 21:54:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761712278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:38,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:38,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:38,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626788324] [2023-11-06 21:54:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:38,136 INFO L87 Difference]: Start difference. First operand 28820 states and 48256 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:44,260 INFO L93 Difference]: Finished difference Result 78615 states and 133774 transitions. [2023-11-06 21:54:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2023-11-06 21:54:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:44,601 INFO L225 Difference]: With dead ends: 78615 [2023-11-06 21:54:44,601 INFO L226 Difference]: Without dead ends: 52800 [2023-11-06 21:54:44,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:44,674 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 945 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:44,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 837 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:54:44,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52800 states. [2023-11-06 21:54:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52800 to 52699. [2023-11-06 21:54:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52699 states, 44160 states have (on average 1.579302536231884) internal successors, (69742), 44167 states have internal predecessors, (69742), 8517 states have call successors, (8517), 17 states have call predecessors, (8517), 21 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2023-11-06 21:54:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52699 states to 52699 states and 87921 transitions. [2023-11-06 21:54:50,055 INFO L78 Accepts]: Start accepts. Automaton has 52699 states and 87921 transitions. Word has length 117 [2023-11-06 21:54:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:50,056 INFO L495 AbstractCegarLoop]: Abstraction has 52699 states and 87921 transitions. [2023-11-06 21:54:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 52699 states and 87921 transitions. [2023-11-06 21:54:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 21:54:50,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:50,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:54:50,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 21:54:50,090 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:50,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 736585342, now seen corresponding path program 1 times [2023-11-06 21:54:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432871627] [2023-11-06 21:54:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:54:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:54:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:54:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:54:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:54:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:54:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 21:54:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 21:54:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 21:54:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 21:54:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-06 21:54:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:54:50,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:50,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432871627] [2023-11-06 21:54:50,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432871627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:50,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:50,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:54:50,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651845639] [2023-11-06 21:54:50,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:50,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:50,262 INFO L87 Difference]: Start difference. First operand 52699 states and 87921 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:54:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:58,230 INFO L93 Difference]: Finished difference Result 98386 states and 167704 transitions. [2023-11-06 21:54:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2023-11-06 21:54:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:58,694 INFO L225 Difference]: With dead ends: 98386 [2023-11-06 21:54:58,695 INFO L226 Difference]: Without dead ends: 98259 [2023-11-06 21:54:58,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:54:58,743 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 943 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:58,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 806 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 21:54:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98259 states. [2023-11-06 21:55:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98259 to 98158. [2023-11-06 21:55:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98158 states, 82820 states have (on average 1.5719512195121952) internal successors, (130189), 82827 states have internal predecessors, (130189), 15316 states have call successors, (15316), 17 states have call predecessors, (15316), 21 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2023-11-06 21:55:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98158 states to 98158 states and 163012 transitions. [2023-11-06 21:55:07,638 INFO L78 Accepts]: Start accepts. Automaton has 98158 states and 163012 transitions. Word has length 118 [2023-11-06 21:55:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:07,638 INFO L495 AbstractCegarLoop]: Abstraction has 98158 states and 163012 transitions. [2023-11-06 21:55:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:55:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 98158 states and 163012 transitions. [2023-11-06 21:55:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 21:55:07,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:07,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-06 21:55:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 21:55:07,667 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:07,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 519306732, now seen corresponding path program 1 times [2023-11-06 21:55:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572321876] [2023-11-06 21:55:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:55:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:55:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:55:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 21:55:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:55:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:55:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:55:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 21:55:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 21:55:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 21:55:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572321876] [2023-11-06 21:55:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572321876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:08,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:08,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 21:55:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974559243] [2023-11-06 21:55:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:55:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:55:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:55:08,466 INFO L87 Difference]: Start difference. First operand 98158 states and 163012 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11)