./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:08:28,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:08:29,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:08:29,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:08:29,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:08:29,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:08:29,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:08:29,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:08:29,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:08:29,092 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:08:29,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:08:29,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:08:29,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:08:29,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:08:29,095 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:08:29,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:08:29,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:08:29,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:08:29,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:08:29,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:08:29,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:08:29,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:08:29,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:08:29,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:08:29,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:08:29,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:08:29,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:08:29,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:08:29,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:08:29,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:08:29,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:08:29,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:08:29,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:08:29,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:08:29,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:08:29,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:08:29,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:08:29,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:08:29,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:08:29,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:08:29,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:08:29,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:08:29,117 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_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 [2023-11-29 07:08:29,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:08:29,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:08:29,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:08:29,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:08:29,366 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:08:29,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2023-11-29 07:08:32,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:08:32,452 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:08:32,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2023-11-29 07:08:32,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/data/62129215e/14fe1c2c56f243989d5b5059decce95e/FLAG9d99c3805 [2023-11-29 07:08:32,488 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/data/62129215e/14fe1c2c56f243989d5b5059decce95e [2023-11-29 07:08:32,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:08:32,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:08:32,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:32,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:08:32,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:08:32,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:32" (1/1) ... [2023-11-29 07:08:32,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dbae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:32, skipping insertion in model container [2023-11-29 07:08:32,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:32" (1/1) ... [2023-11-29 07:08:32,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:08:32,903 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_963a1aaf-e1ab-471a-93f7-4fa170af785b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2023-11-29 07:08:33,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:33,108 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:08:33,119 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-29 07:08:33,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [380] [2023-11-29 07:08:33,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [599] [2023-11-29 07:08:33,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [965] [2023-11-29 07:08:33,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [974] [2023-11-29 07:08:33,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1386] [2023-11-29 07:08:33,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1403] [2023-11-29 07:08:33,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1438] [2023-11-29 07:08:33,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [1537] [2023-11-29 07:08:33,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1597] [2023-11-29 07:08:33,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1936] [2023-11-29 07:08:33,158 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_963a1aaf-e1ab-471a-93f7-4fa170af785b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2023-11-29 07:08:33,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:33,257 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 07:08:33,263 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:08:33,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33 WrapperNode [2023-11-29 07:08:33,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:33,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:33,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:08:33,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:08:33,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,354 INFO L138 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 58, calls inlined = 51, statements flattened = 986 [2023-11-29 07:08:33,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:33,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:08:33,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:08:33,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:08:33,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,403 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-29 07:08:33,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:08:33,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:08:33,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:08:33,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:08:33,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (1/1) ... [2023-11-29 07:08:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:08:33,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:33,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:08:33,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:08:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-29 07:08:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-29 07:08:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-29 07:08:33,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-29 07:08:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-29 07:08:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-29 07:08:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-29 07:08:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-29 07:08:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-29 07:08:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-29 07:08:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-29 07:08:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-29 07:08:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-29 07:08:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-29 07:08:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-29 07:08:33,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-29 07:08:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-29 07:08:33,545 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-29 07:08:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-29 07:08:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-29 07:08:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-29 07:08:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-29 07:08:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-29 07:08:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:08:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-29 07:08:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-29 07:08:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-29 07:08:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-29 07:08:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-29 07:08:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-29 07:08:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-29 07:08:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-29 07:08:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 07:08:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 07:08:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-29 07:08:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-29 07:08:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-29 07:08:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-29 07:08:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-29 07:08:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-29 07:08:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-29 07:08:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-29 07:08:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-29 07:08:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-29 07:08:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-29 07:08:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-29 07:08:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:08:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:08:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:08:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 07:08:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-29 07:08:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-29 07:08:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-29 07:08:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-29 07:08:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:08:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:08:33,748 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:08:33,750 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:08:34,503 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:08:34,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:08:34,561 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:08:34,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:34 BoogieIcfgContainer [2023-11-29 07:08:34,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:08:34,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:08:34,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:08:34,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:08:34,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:08:32" (1/3) ... [2023-11-29 07:08:34,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220478b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:34, skipping insertion in model container [2023-11-29 07:08:34,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:33" (2/3) ... [2023-11-29 07:08:34,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220478b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:34, skipping insertion in model container [2023-11-29 07:08:34,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:34" (3/3) ... [2023-11-29 07:08:34,570 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product23.cil.c [2023-11-29 07:08:34,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:08:34,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:08:34,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:08:34,641 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ae863a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:08:34,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:08:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 273 states have (on average 1.6227106227106227) internal successors, (443), 278 states have internal predecessors, (443), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-29 07:08:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 07:08:34,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:34,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:34,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:34,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash -326415595, now seen corresponding path program 1 times [2023-11-29 07:08:34,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913551698] [2023-11-29 07:08:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:34,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 07:08:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 07:08:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:08:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 07:08:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 07:08:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:08:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 07:08:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:08:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 07:08:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:08:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:08:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 07:08:35,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:35,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913551698] [2023-11-29 07:08:35,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913551698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:35,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626085577] [2023-11-29 07:08:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:35,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:08:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 07:08:35,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 07:08:35,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:35,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626085577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:08:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-29 07:08:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643719840] [2023-11-29 07:08:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:35,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:08:35,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:35,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:08:35,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:35,823 INFO L87 Difference]: Start difference. First operand has 357 states, 273 states have (on average 1.6227106227106227) internal successors, (443), 278 states have internal predecessors, (443), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:35,928 INFO L93 Difference]: Finished difference Result 529 states and 817 transitions. [2023-11-29 07:08:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:08:35,931 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2023-11-29 07:08:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:35,947 INFO L225 Difference]: With dead ends: 529 [2023-11-29 07:08:35,947 INFO L226 Difference]: Without dead ends: 353 [2023-11-29 07:08:35,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:35,957 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:35,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-29 07:08:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-29 07:08:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.6088560885608856) internal successors, (436), 274 states have internal predecessors, (436), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-29 07:08:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 549 transitions. [2023-11-29 07:08:36,032 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 549 transitions. Word has length 105 [2023-11-29 07:08:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:36,034 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 549 transitions. [2023-11-29 07:08:36,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 549 transitions. [2023-11-29 07:08:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 07:08:36,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:36,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:36,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 07:08:36,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:36,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash 47181248, now seen corresponding path program 1 times [2023-11-29 07:08:36,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:36,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969281367] [2023-11-29 07:08:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:36,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 07:08:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 07:08:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:08:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:08:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 07:08:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 07:08:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:08:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 07:08:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:08:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 07:08:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:08:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 07:08:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969281367] [2023-11-29 07:08:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969281367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339960343] [2023-11-29 07:08:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:36,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:36,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:36,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:36,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:08:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:36,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:08:36,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 07:08:36,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339960343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:08:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 07:08:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127683793] [2023-11-29 07:08:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:36,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:08:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:08:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:08:36,903 INFO L87 Difference]: Start difference. First operand 353 states and 549 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:36,972 INFO L93 Difference]: Finished difference Result 524 states and 797 transitions. [2023-11-29 07:08:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:08:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 106 [2023-11-29 07:08:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:36,977 INFO L225 Difference]: With dead ends: 524 [2023-11-29 07:08:36,977 INFO L226 Difference]: Without dead ends: 355 [2023-11-29 07:08:36,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:08:36,981 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 0 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:36,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1067 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-29 07:08:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2023-11-29 07:08:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 273 states have (on average 1.6043956043956045) internal successors, (438), 276 states have internal predecessors, (438), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-29 07:08:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 551 transitions. [2023-11-29 07:08:37,011 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 551 transitions. Word has length 106 [2023-11-29 07:08:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:37,011 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 551 transitions. [2023-11-29 07:08:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 551 transitions. [2023-11-29 07:08:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 07:08:37,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:37,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:37,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:08:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:37,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:37,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash -276271042, now seen corresponding path program 1 times [2023-11-29 07:08:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533599280] [2023-11-29 07:08:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 07:08:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 07:08:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:08:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 07:08:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 07:08:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:08:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:08:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 07:08:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 07:08:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:08:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:08:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 07:08:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:08:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 07:08:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:08:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533599280] [2023-11-29 07:08:37,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533599280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984562926] [2023-11-29 07:08:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:37,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:37,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:37,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:08:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:08:37,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 07:08:37,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:37,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984562926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:37,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:08:37,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 07:08:37,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270427011] [2023-11-29 07:08:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:37,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:08:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:08:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:08:37,890 INFO L87 Difference]: Start difference. First operand 355 states and 551 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:08:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:37,958 INFO L93 Difference]: Finished difference Result 758 states and 1194 transitions. [2023-11-29 07:08:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:08:37,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2023-11-29 07:08:37,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:37,963 INFO L225 Difference]: With dead ends: 758 [2023-11-29 07:08:37,963 INFO L226 Difference]: Without dead ends: 425 [2023-11-29 07:08:37,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:08:37,966 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 129 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:37,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1044 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-29 07:08:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 420. [2023-11-29 07:08:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 324 states have (on average 1.6203703703703705) internal successors, (525), 327 states have internal predecessors, (525), 72 states have call successors, (72), 24 states have call predecessors, (72), 23 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-29 07:08:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 666 transitions. [2023-11-29 07:08:37,998 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 666 transitions. Word has length 131 [2023-11-29 07:08:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:37,999 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 666 transitions. [2023-11-29 07:08:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:08:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 666 transitions. [2023-11-29 07:08:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 07:08:38,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:38,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:38,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:38,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -835494009, now seen corresponding path program 1 times [2023-11-29 07:08:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811232350] [2023-11-29 07:08:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 07:08:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 07:08:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:08:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 07:08:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 07:08:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 07:08:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 07:08:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 07:08:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 07:08:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 07:08:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 07:08:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 07:08:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811232350] [2023-11-29 07:08:38,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811232350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878678413] [2023-11-29 07:08:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:38,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:38,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:38,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:08:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:08:38,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 07:08:38,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:38,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878678413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:38,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:08:38,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 07:08:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52305135] [2023-11-29 07:08:38,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:38,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:08:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:08:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:08:38,853 INFO L87 Difference]: Start difference. First operand 420 states and 666 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:08:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:38,978 INFO L93 Difference]: Finished difference Result 835 states and 1326 transitions. [2023-11-29 07:08:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:08:38,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-11-29 07:08:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:38,983 INFO L225 Difference]: With dead ends: 835 [2023-11-29 07:08:38,984 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 07:08:38,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:08:38,987 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 8 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:38,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2089 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 07:08:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2023-11-29 07:08:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 329 states have internal predecessors, (526), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 68 states have call predecessors, (71), 69 states have call successors, (71) [2023-11-29 07:08:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 669 transitions. [2023-11-29 07:08:39,010 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 669 transitions. Word has length 114 [2023-11-29 07:08:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:39,011 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 669 transitions. [2023-11-29 07:08:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:08:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 669 transitions. [2023-11-29 07:08:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 07:08:39,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:39,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:39,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:39,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:39,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1241905289, now seen corresponding path program 1 times [2023-11-29 07:08:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922376165] [2023-11-29 07:08:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 07:08:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 07:08:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:08:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 07:08:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 07:08:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:08:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 07:08:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:08:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 07:08:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 07:08:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 07:08:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 07:08:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 07:08:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 07:08:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922376165] [2023-11-29 07:08:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922376165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527838591] [2023-11-29 07:08:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:39,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:39,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:39,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:08:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:39,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:08:39,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 07:08:39,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527838591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:08:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-29 07:08:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113747404] [2023-11-29 07:08:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:08:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:08:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:08:39,945 INFO L87 Difference]: Start difference. First operand 422 states and 669 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 07:08:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:40,070 INFO L93 Difference]: Finished difference Result 837 states and 1331 transitions. [2023-11-29 07:08:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:08:40,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 133 [2023-11-29 07:08:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:40,075 INFO L225 Difference]: With dead ends: 837 [2023-11-29 07:08:40,075 INFO L226 Difference]: Without dead ends: 424 [2023-11-29 07:08:40,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:08:40,078 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 8 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:40,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2075 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:08:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-29 07:08:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-11-29 07:08:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 326 states have (on average 1.616564417177914) internal successors, (527), 331 states have internal predecessors, (527), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2023-11-29 07:08:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 675 transitions. [2023-11-29 07:08:40,101 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 675 transitions. Word has length 133 [2023-11-29 07:08:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:40,102 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 675 transitions. [2023-11-29 07:08:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 07:08:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 675 transitions. [2023-11-29 07:08:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 07:08:40,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:40,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:40,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:40,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:40,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1721182721, now seen corresponding path program 1 times [2023-11-29 07:08:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:40,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205392576] [2023-11-29 07:08:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 07:08:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 07:08:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 07:08:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 07:08:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 07:08:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 07:08:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 07:08:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 07:08:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 07:08:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 07:08:40,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205392576] [2023-11-29 07:08:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205392576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:08:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242397119] [2023-11-29 07:08:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:08:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:08:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:40,617 INFO L87 Difference]: Start difference. First operand 424 states and 675 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:08:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:42,913 INFO L93 Difference]: Finished difference Result 927 states and 1507 transitions. [2023-11-29 07:08:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:08:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2023-11-29 07:08:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:42,919 INFO L225 Difference]: With dead ends: 927 [2023-11-29 07:08:42,919 INFO L226 Difference]: Without dead ends: 522 [2023-11-29 07:08:42,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:08:42,923 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1199 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:42,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1192 Invalid, 2712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [434 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 07:08:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-29 07:08:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 424. [2023-11-29 07:08:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 326 states have (on average 1.616564417177914) internal successors, (527), 331 states have internal predecessors, (527), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (75), 68 states have call predecessors, (75), 69 states have call successors, (75) [2023-11-29 07:08:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 674 transitions. [2023-11-29 07:08:42,971 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 674 transitions. Word has length 116 [2023-11-29 07:08:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:42,972 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 674 transitions. [2023-11-29 07:08:42,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:08:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 674 transitions. [2023-11-29 07:08:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 07:08:42,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:42,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:42,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:08:42,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:42,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 125650147, now seen corresponding path program 1 times [2023-11-29 07:08:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566690705] [2023-11-29 07:08:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:08:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 07:08:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:08:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:08:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 07:08:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 07:08:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 07:08:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 07:08:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 07:08:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 07:08:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 07:08:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 07:08:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:08:43,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566690705] [2023-11-29 07:08:43,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566690705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:43,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:43,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:08:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925195155] [2023-11-29 07:08:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:43,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:08:43,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:08:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:43,254 INFO L87 Difference]: Start difference. First operand 424 states and 674 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 07:08:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:45,391 INFO L93 Difference]: Finished difference Result 929 states and 1510 transitions. [2023-11-29 07:08:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:08:45,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2023-11-29 07:08:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:45,397 INFO L225 Difference]: With dead ends: 929 [2023-11-29 07:08:45,397 INFO L226 Difference]: Without dead ends: 524 [2023-11-29 07:08:45,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:08:45,400 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1189 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:45,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 1193 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 07:08:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-29 07:08:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 426. [2023-11-29 07:08:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 327 states have (on average 1.614678899082569) internal successors, (528), 333 states have internal predecessors, (528), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 68 states have call predecessors, (77), 69 states have call successors, (77) [2023-11-29 07:08:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 677 transitions. [2023-11-29 07:08:45,441 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 677 transitions. Word has length 135 [2023-11-29 07:08:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:45,441 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 677 transitions. [2023-11-29 07:08:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 07:08:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 677 transitions. [2023-11-29 07:08:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 07:08:45,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:45,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:45,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:08:45,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1488256486, now seen corresponding path program 1 times [2023-11-29 07:08:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:45,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309999253] [2023-11-29 07:08:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 07:08:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 07:08:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 07:08:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:08:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:08:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:08:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:08:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 07:08:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:08:45,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:45,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309999253] [2023-11-29 07:08:45,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309999253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:45,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:45,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 07:08:45,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412496864] [2023-11-29 07:08:45,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:08:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:08:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:08:45,732 INFO L87 Difference]: Start difference. First operand 426 states and 677 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 07:08:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:48,282 INFO L93 Difference]: Finished difference Result 927 states and 1505 transitions. [2023-11-29 07:08:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:08:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 118 [2023-11-29 07:08:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:48,287 INFO L225 Difference]: With dead ends: 927 [2023-11-29 07:08:48,287 INFO L226 Difference]: Without dead ends: 524 [2023-11-29 07:08:48,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 07:08:48,290 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1197 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 3942 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 4354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:48,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1652 Invalid, 4354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3942 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 07:08:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-29 07:08:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 426. [2023-11-29 07:08:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 327 states have (on average 1.614678899082569) internal successors, (528), 333 states have internal predecessors, (528), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2023-11-29 07:08:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 676 transitions. [2023-11-29 07:08:48,334 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 676 transitions. Word has length 118 [2023-11-29 07:08:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:48,334 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 676 transitions. [2023-11-29 07:08:48,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 07:08:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 676 transitions. [2023-11-29 07:08:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 07:08:48,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:48,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:48,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:08:48,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:48,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2077727416, now seen corresponding path program 2 times [2023-11-29 07:08:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144823523] [2023-11-29 07:08:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 07:08:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:08:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 07:08:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 07:08:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 07:08:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:08:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:08:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:08:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:08:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:48,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144823523] [2023-11-29 07:08:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144823523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:48,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 07:08:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743287122] [2023-11-29 07:08:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:08:48,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:08:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:08:48,581 INFO L87 Difference]: Start difference. First operand 426 states and 676 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 07:08:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:50,854 INFO L93 Difference]: Finished difference Result 929 states and 1511 transitions. [2023-11-29 07:08:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:08:50,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 119 [2023-11-29 07:08:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:50,858 INFO L225 Difference]: With dead ends: 929 [2023-11-29 07:08:50,858 INFO L226 Difference]: Without dead ends: 526 [2023-11-29 07:08:50,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 07:08:50,860 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1199 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 4284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:50,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1651 Invalid, 4284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 07:08:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-29 07:08:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 428. [2023-11-29 07:08:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 328 states have (on average 1.6128048780487805) internal successors, (529), 335 states have internal predecessors, (529), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (81), 68 states have call predecessors, (81), 69 states have call successors, (81) [2023-11-29 07:08:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 682 transitions. [2023-11-29 07:08:50,901 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 682 transitions. Word has length 119 [2023-11-29 07:08:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:50,901 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 682 transitions. [2023-11-29 07:08:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 07:08:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 682 transitions. [2023-11-29 07:08:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 07:08:50,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:50,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:08:50,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:50,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1280167841, now seen corresponding path program 1 times [2023-11-29 07:08:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821707251] [2023-11-29 07:08:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:50,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 07:08:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:08:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:08:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 07:08:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 07:08:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 07:08:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:08:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:08:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:08:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:08:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:08:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 07:08:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:51,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821707251] [2023-11-29 07:08:51,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821707251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:51,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128248012] [2023-11-29 07:08:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:51,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:51,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:51,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:51,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:08:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:51,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:08:51,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:08:51,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:08:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128248012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:51,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-29 07:08:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461036280] [2023-11-29 07:08:51,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:08:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:08:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:08:51,589 INFO L87 Difference]: Start difference. First operand 428 states and 682 transitions. Second operand has 15 states, 14 states have (on average 10.071428571428571) internal successors, (141), 11 states have internal predecessors, (141), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 07:08:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:54,242 INFO L93 Difference]: Finished difference Result 1348 states and 2287 transitions. [2023-11-29 07:08:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 07:08:54,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.071428571428571) internal successors, (141), 11 states have internal predecessors, (141), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 138 [2023-11-29 07:08:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:54,248 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 07:08:54,249 INFO L226 Difference]: Without dead ends: 946 [2023-11-29 07:08:54,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:08:54,251 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 2614 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:54,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 1862 Invalid, 5142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 07:08:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-11-29 07:08:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 833. [2023-11-29 07:08:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 654 states have (on average 1.654434250764526) internal successors, (1082), 661 states have internal predecessors, (1082), 151 states have call successors, (151), 24 states have call predecessors, (151), 27 states have return successors, (170), 147 states have call predecessors, (170), 148 states have call successors, (170) [2023-11-29 07:08:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1403 transitions. [2023-11-29 07:08:54,294 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1403 transitions. Word has length 138 [2023-11-29 07:08:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:54,294 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1403 transitions. [2023-11-29 07:08:54,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.071428571428571) internal successors, (141), 11 states have internal predecessors, (141), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 07:08:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1403 transitions. [2023-11-29 07:08:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 07:08:54,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:54,299 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, 1, 1, 1, 1, 1] [2023-11-29 07:08:54,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:08:54,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 07:08:54,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2000965383, now seen corresponding path program 1 times [2023-11-29 07:08:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103122331] [2023-11-29 07:08:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:08:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 07:08:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 07:08:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:08:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:08:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 07:08:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 07:08:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 07:08:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:08:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103122331] [2023-11-29 07:08:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103122331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:54,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:08:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516318966] [2023-11-29 07:08:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:54,626 INFO L87 Difference]: Start difference. First operand 833 states and 1403 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:56,010 INFO L93 Difference]: Finished difference Result 2083 states and 3606 transitions. [2023-11-29 07:08:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:56,010 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2023-11-29 07:08:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:56,020 INFO L225 Difference]: With dead ends: 2083 [2023-11-29 07:08:56,021 INFO L226 Difference]: Without dead ends: 1318 [2023-11-29 07:08:56,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:08:56,024 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1310 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:56,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 892 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:08:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-11-29 07:08:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1215. [2023-11-29 07:08:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 957 states have (on average 1.665621734587252) internal successors, (1594), 964 states have internal predecessors, (1594), 230 states have call successors, (230), 24 states have call predecessors, (230), 27 states have return successors, (259), 226 states have call predecessors, (259), 227 states have call successors, (259) [2023-11-29 07:08:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2083 transitions. [2023-11-29 07:08:56,118 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2083 transitions. Word has length 124 [2023-11-29 07:08:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:56,119 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2083 transitions. [2023-11-29 07:08:56,119 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:56,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2083 transitions. [2023-11-29 07:08:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 07:08:56,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:56,128 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, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:08:56,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:56,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1411281371, now seen corresponding path program 1 times [2023-11-29 07:08:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:56,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962311667] [2023-11-29 07:08:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:08:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:08:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 07:08:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 07:08:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:08:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:08:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:08:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:08:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:08:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962311667] [2023-11-29 07:08:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962311667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:08:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717835775] [2023-11-29 07:08:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:56,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:56,242 INFO L87 Difference]: Start difference. First operand 1215 states and 2083 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:57,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:57,808 INFO L93 Difference]: Finished difference Result 3034 states and 5292 transitions. [2023-11-29 07:08:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:57,809 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2023-11-29 07:08:57,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:57,823 INFO L225 Difference]: With dead ends: 3034 [2023-11-29 07:08:57,824 INFO L226 Difference]: Without dead ends: 1937 [2023-11-29 07:08:57,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:08:57,828 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1306 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:57,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 885 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:08:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-11-29 07:08:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1834. [2023-11-29 07:08:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1457 states have (on average 1.6705559368565546) internal successors, (2434), 1464 states have internal predecessors, (2434), 349 states have call successors, (349), 24 states have call predecessors, (349), 27 states have return successors, (378), 345 states have call predecessors, (378), 346 states have call successors, (378) [2023-11-29 07:08:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 3161 transitions. [2023-11-29 07:08:57,971 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 3161 transitions. Word has length 125 [2023-11-29 07:08:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 3161 transitions. [2023-11-29 07:08:57,972 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, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:08:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 3161 transitions. [2023-11-29 07:08:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:08:57,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:57,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:08:57,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:57,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1122739415, now seen corresponding path program 1 times [2023-11-29 07:08:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091350312] [2023-11-29 07:08:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 07:08:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 07:08:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 07:08:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 07:08:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 07:08:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 07:08:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:08:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:08:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 07:08:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:08:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 07:08:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:08:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091350312] [2023-11-29 07:08:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091350312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:58,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:08:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141917492] [2023-11-29 07:08:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:58,112 INFO L87 Difference]: Start difference. First operand 1834 states and 3161 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:08:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:59,537 INFO L93 Difference]: Finished difference Result 4474 states and 7863 transitions. [2023-11-29 07:08:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:59,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-11-29 07:08:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:59,554 INFO L225 Difference]: With dead ends: 4474 [2023-11-29 07:08:59,554 INFO L226 Difference]: Without dead ends: 2886 [2023-11-29 07:08:59,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:08:59,559 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1304 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:59,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 871 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:08:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2023-11-29 07:08:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2783. [2023-11-29 07:08:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2244 states have (on average 1.6751336898395721) internal successors, (3759), 2251 states have internal predecessors, (3759), 511 states have call successors, (511), 24 states have call predecessors, (511), 27 states have return successors, (556), 507 states have call predecessors, (556), 508 states have call successors, (556) [2023-11-29 07:08:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4826 transitions. [2023-11-29 07:08:59,721 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4826 transitions. Word has length 144 [2023-11-29 07:08:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:59,721 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 4826 transitions. [2023-11-29 07:08:59,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:08:59,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4826 transitions. [2023-11-29 07:08:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 07:08:59,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:59,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:59,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:08:59,737 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:59,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 136726672, now seen corresponding path program 1 times [2023-11-29 07:08:59,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:59,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936068651] [2023-11-29 07:08:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:59,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:08:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:08:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:08:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:08:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:08:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:08:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 07:08:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 07:08:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 07:08:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 07:08:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 07:08:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 07:08:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 07:08:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 07:08:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:08:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 07:08:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 07:08:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:08:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936068651] [2023-11-29 07:08:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936068651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:08:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989908381] [2023-11-29 07:08:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:59,879 INFO L87 Difference]: Start difference. First operand 2783 states and 4826 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:09:01,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:01,399 INFO L93 Difference]: Finished difference Result 6746 states and 11931 transitions. [2023-11-29 07:09:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-11-29 07:09:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:01,423 INFO L225 Difference]: With dead ends: 6746 [2023-11-29 07:09:01,423 INFO L226 Difference]: Without dead ends: 4418 [2023-11-29 07:09:01,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:01,429 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1306 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:01,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 872 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:09:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2023-11-29 07:09:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4315. [2023-11-29 07:09:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4315 states, 3531 states have (on average 1.6785613140753328) internal successors, (5927), 3538 states have internal predecessors, (5927), 756 states have call successors, (756), 24 states have call predecessors, (756), 27 states have return successors, (827), 752 states have call predecessors, (827), 753 states have call successors, (827) [2023-11-29 07:09:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 7510 transitions. [2023-11-29 07:09:01,616 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 7510 transitions. Word has length 145 [2023-11-29 07:09:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:01,616 INFO L495 AbstractCegarLoop]: Abstraction has 4315 states and 7510 transitions. [2023-11-29 07:09:01,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:09:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 7510 transitions. [2023-11-29 07:09:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 07:09:01,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:01,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:01,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 07:09:01,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:01,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash 556629083, now seen corresponding path program 1 times [2023-11-29 07:09:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:01,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591088622] [2023-11-29 07:09:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 07:09:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 07:09:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 07:09:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:09:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:09:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:09:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 07:09:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 07:09:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 07:09:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 07:09:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 07:09:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:09:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591088622] [2023-11-29 07:09:01,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591088622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:01,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:01,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710400927] [2023-11-29 07:09:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:01,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:01,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:01,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:01,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:01,729 INFO L87 Difference]: Start difference. First operand 4315 states and 7510 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:09:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:03,478 INFO L93 Difference]: Finished difference Result 10799 states and 19142 transitions. [2023-11-29 07:09:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:03,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-11-29 07:09:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:03,518 INFO L225 Difference]: With dead ends: 10799 [2023-11-29 07:09:03,519 INFO L226 Difference]: Without dead ends: 7178 [2023-11-29 07:09:03,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:03,530 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1303 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:03,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 929 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 07:09:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2023-11-29 07:09:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7075. [2023-11-29 07:09:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7075 states, 5798 states have (on average 1.6735081062435322) internal successors, (9703), 5805 states have internal predecessors, (9703), 1249 states have call successors, (1249), 24 states have call predecessors, (1249), 27 states have return successors, (1364), 1245 states have call predecessors, (1364), 1246 states have call successors, (1364) [2023-11-29 07:09:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7075 states to 7075 states and 12316 transitions. [2023-11-29 07:09:03,816 INFO L78 Accepts]: Start accepts. Automaton has 7075 states and 12316 transitions. Word has length 146 [2023-11-29 07:09:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:03,816 INFO L495 AbstractCegarLoop]: Abstraction has 7075 states and 12316 transitions. [2023-11-29 07:09:03,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:09:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7075 states and 12316 transitions. [2023-11-29 07:09:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 07:09:03,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:03,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:09:03,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:03,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -69132960, now seen corresponding path program 1 times [2023-11-29 07:09:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958033232] [2023-11-29 07:09:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 07:09:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:09:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:09:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 07:09:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 07:09:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 07:09:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 07:09:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 07:09:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:03,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:03,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958033232] [2023-11-29 07:09:03,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958033232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:03,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:03,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:03,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522058900] [2023-11-29 07:09:03,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:03,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:03,935 INFO L87 Difference]: Start difference. First operand 7075 states and 12316 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:05,667 INFO L93 Difference]: Finished difference Result 18002 states and 31889 transitions. [2023-11-29 07:09:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2023-11-29 07:09:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:05,709 INFO L225 Difference]: With dead ends: 18002 [2023-11-29 07:09:05,709 INFO L226 Difference]: Without dead ends: 12007 [2023-11-29 07:09:05,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:05,729 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1299 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:05,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 879 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:09:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12007 states. [2023-11-29 07:09:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12007 to 11904. [2023-11-29 07:09:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 9805 states have (on average 1.67302396736359) internal successors, (16404), 9812 states have internal predecessors, (16404), 2071 states have call successors, (2071), 24 states have call predecessors, (2071), 27 states have return successors, (2264), 2067 states have call predecessors, (2264), 2068 states have call successors, (2264) [2023-11-29 07:09:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 20739 transitions. [2023-11-29 07:09:06,295 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 20739 transitions. Word has length 129 [2023-11-29 07:09:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:06,295 INFO L495 AbstractCegarLoop]: Abstraction has 11904 states and 20739 transitions. [2023-11-29 07:09:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 20739 transitions. [2023-11-29 07:09:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 07:09:06,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:06,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 07:09:06,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1945646867, now seen corresponding path program 1 times [2023-11-29 07:09:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266615561] [2023-11-29 07:09:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:09:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 07:09:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 07:09:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:09:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 07:09:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 07:09:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 07:09:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 07:09:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266615561] [2023-11-29 07:09:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266615561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:06,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:06,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057900175] [2023-11-29 07:09:06,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:06,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:06,425 INFO L87 Difference]: Start difference. First operand 11904 states and 20739 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:08,317 INFO L93 Difference]: Finished difference Result 28548 states and 50337 transitions. [2023-11-29 07:09:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:08,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2023-11-29 07:09:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:08,405 INFO L225 Difference]: With dead ends: 28548 [2023-11-29 07:09:08,405 INFO L226 Difference]: Without dead ends: 18679 [2023-11-29 07:09:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:08,434 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1301 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:08,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 853 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:09:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18679 states. [2023-11-29 07:09:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18679 to 18576. [2023-11-29 07:09:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 15274 states have (on average 1.649404216315307) internal successors, (25193), 15281 states have internal predecessors, (25193), 3274 states have call successors, (3274), 24 states have call predecessors, (3274), 27 states have return successors, (3611), 3270 states have call predecessors, (3611), 3271 states have call successors, (3611) [2023-11-29 07:09:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 32078 transitions. [2023-11-29 07:09:09,257 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 32078 transitions. Word has length 130 [2023-11-29 07:09:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:09,257 INFO L495 AbstractCegarLoop]: Abstraction has 18576 states and 32078 transitions. [2023-11-29 07:09:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 32078 transitions. [2023-11-29 07:09:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 07:09:09,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:09,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 07:09:09,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:09,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 628955519, now seen corresponding path program 1 times [2023-11-29 07:09:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795144476] [2023-11-29 07:09:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 07:09:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 07:09:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 07:09:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:09:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:09:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 07:09:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:09:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 07:09:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795144476] [2023-11-29 07:09:09,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795144476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:09,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:09,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:09,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950070242] [2023-11-29 07:09:09,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:09,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:09,404 INFO L87 Difference]: Start difference. First operand 18576 states and 32078 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:11,940 INFO L93 Difference]: Finished difference Result 49181 states and 86456 transitions. [2023-11-29 07:09:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2023-11-29 07:09:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:12,071 INFO L225 Difference]: With dead ends: 49181 [2023-11-29 07:09:12,071 INFO L226 Difference]: Without dead ends: 33260 [2023-11-29 07:09:12,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:12,118 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1297 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:12,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 872 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:09:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33260 states. [2023-11-29 07:09:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33260 to 33157. [2023-11-29 07:09:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33157 states, 27405 states have (on average 1.646378398102536) internal successors, (45119), 27412 states have internal predecessors, (45119), 5724 states have call successors, (5724), 24 states have call predecessors, (5724), 27 states have return successors, (6335), 5720 states have call predecessors, (6335), 5721 states have call successors, (6335) [2023-11-29 07:09:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33157 states to 33157 states and 57178 transitions. [2023-11-29 07:09:13,685 INFO L78 Accepts]: Start accepts. Automaton has 33157 states and 57178 transitions. Word has length 131 [2023-11-29 07:09:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:13,686 INFO L495 AbstractCegarLoop]: Abstraction has 33157 states and 57178 transitions. [2023-11-29 07:09:13,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 33157 states and 57178 transitions. [2023-11-29 07:09:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 07:09:13,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:13,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:13,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 07:09:13,719 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:13,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1921504595, now seen corresponding path program 1 times [2023-11-29 07:09:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070391681] [2023-11-29 07:09:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:13,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 07:09:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:09:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 07:09:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 07:09:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:09:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:09:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 07:09:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:09:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070391681] [2023-11-29 07:09:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070391681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:13,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697702022] [2023-11-29 07:09:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:13,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:13,864 INFO L87 Difference]: Start difference. First operand 33157 states and 57178 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:17,245 INFO L93 Difference]: Finished difference Result 90483 states and 158285 transitions. [2023-11-29 07:09:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2023-11-29 07:09:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:17,428 INFO L225 Difference]: With dead ends: 90483 [2023-11-29 07:09:17,428 INFO L226 Difference]: Without dead ends: 60872 [2023-11-29 07:09:17,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:17,491 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1289 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:17,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 880 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:09:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60872 states. [2023-11-29 07:09:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60872 to 60769. [2023-11-29 07:09:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60769 states, 50504 states have (on average 1.6424243624267385) internal successors, (82949), 50511 states have internal predecessors, (82949), 10237 states have call successors, (10237), 24 states have call predecessors, (10237), 27 states have return successors, (11380), 10233 states have call predecessors, (11380), 10234 states have call successors, (11380) [2023-11-29 07:09:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60769 states to 60769 states and 104566 transitions. [2023-11-29 07:09:19,885 INFO L78 Accepts]: Start accepts. Automaton has 60769 states and 104566 transitions. Word has length 132 [2023-11-29 07:09:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:19,885 INFO L495 AbstractCegarLoop]: Abstraction has 60769 states and 104566 transitions. [2023-11-29 07:09:19,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 60769 states and 104566 transitions. [2023-11-29 07:09:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 07:09:19,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:19,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:19,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 07:09:19,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:19,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1014410849, now seen corresponding path program 1 times [2023-11-29 07:09:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322599135] [2023-11-29 07:09:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:19,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 07:09:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 07:09:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 07:09:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 07:09:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 07:09:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 07:09:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 07:09:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 07:09:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322599135] [2023-11-29 07:09:20,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322599135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:20,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987937934] [2023-11-29 07:09:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:20,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:20,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:20,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:20,054 INFO L87 Difference]: Start difference. First operand 60769 states and 104566 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:24,727 INFO L93 Difference]: Finished difference Result 113835 states and 199638 transitions. [2023-11-29 07:09:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:09:24,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2023-11-29 07:09:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:25,033 INFO L225 Difference]: With dead ends: 113835 [2023-11-29 07:09:25,033 INFO L226 Difference]: Without dead ends: 113666 [2023-11-29 07:09:25,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:25,061 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1287 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:25,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 874 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:09:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113666 states. [2023-11-29 07:09:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113666 to 113563. [2023-11-29 07:09:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113563 states, 94930 states have (on average 1.6373959759823027) internal successors, (155438), 94937 states have internal predecessors, (155438), 18605 states have call successors, (18605), 24 states have call predecessors, (18605), 27 states have return successors, (20794), 18601 states have call predecessors, (20794), 18602 states have call successors, (20794) [2023-11-29 07:09:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113563 states to 113563 states and 194837 transitions. [2023-11-29 07:09:29,698 INFO L78 Accepts]: Start accepts. Automaton has 113563 states and 194837 transitions. Word has length 133 [2023-11-29 07:09:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:29,698 INFO L495 AbstractCegarLoop]: Abstraction has 113563 states and 194837 transitions. [2023-11-29 07:09:29,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:09:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 113563 states and 194837 transitions. [2023-11-29 07:09:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 07:09:29,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:29,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:29,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 07:09:29,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:29,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1527382860, now seen corresponding path program 1 times [2023-11-29 07:09:29,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:29,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338179335] [2023-11-29 07:09:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:09:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:09:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 07:09:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 07:09:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 07:09:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 07:09:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 07:09:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 07:09:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:09:30,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:30,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338179335] [2023-11-29 07:09:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338179335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:30,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:30,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 07:09:30,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667641288] [2023-11-29 07:09:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:09:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:09:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:09:30,007 INFO L87 Difference]: Start difference. First operand 113563 states and 194837 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:09:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:38,485 INFO L93 Difference]: Finished difference Result 114518 states and 199779 transitions. [2023-11-29 07:09:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 07:09:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2023-11-29 07:09:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:38,905 INFO L225 Difference]: With dead ends: 114518 [2023-11-29 07:09:38,906 INFO L226 Difference]: Without dead ends: 114356 [2023-11-29 07:09:38,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:09:38,932 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3259 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 4546 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 5826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 4546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:38,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 986 Invalid, 5826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1280 Valid, 4546 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 07:09:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114356 states. [2023-11-29 07:09:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114356 to 114017. [2023-11-29 07:09:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114017 states, 95274 states have (on average 1.637015345214854) internal successors, (155965), 95287 states have internal predecessors, (155965), 18671 states have call successors, (18671), 63 states have call predecessors, (18671), 71 states have return successors, (20875), 18666 states have call predecessors, (20875), 18663 states have call successors, (20875) [2023-11-29 07:09:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114017 states to 114017 states and 195511 transitions. [2023-11-29 07:09:44,119 INFO L78 Accepts]: Start accepts. Automaton has 114017 states and 195511 transitions. Word has length 134 [2023-11-29 07:09:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:44,120 INFO L495 AbstractCegarLoop]: Abstraction has 114017 states and 195511 transitions. [2023-11-29 07:09:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:09:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 114017 states and 195511 transitions. [2023-11-29 07:09:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 07:09:44,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:44,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:44,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 07:09:44,160 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:44,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash -709540021, now seen corresponding path program 1 times [2023-11-29 07:09:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:44,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020454517] [2023-11-29 07:09:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:09:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:09:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:09:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:09:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:09:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:09:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 07:09:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:09:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 07:09:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 07:09:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 07:09:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 07:09:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 07:09:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 07:09:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 07:09:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:09:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:44,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020454517] [2023-11-29 07:09:44,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020454517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:44,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:44,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:44,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853654478] [2023-11-29 07:09:44,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:44,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:44,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:44,395 INFO L87 Difference]: Start difference. First operand 114017 states and 195511 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:09:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:55,119 INFO L93 Difference]: Finished difference Result 220515 states and 386122 transitions. [2023-11-29 07:09:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 07:09:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2023-11-29 07:09:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:56,011 INFO L225 Difference]: With dead ends: 220515 [2023-11-29 07:09:56,011 INFO L226 Difference]: Without dead ends: 219899 [2023-11-29 07:09:56,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:09:56,072 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2845 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 1061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1061 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:56,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 1556 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1061 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 07:09:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219899 states. [2023-11-29 07:10:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219899 to 219207. [2023-11-29 07:10:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219207 states, 183223 states have (on average 1.6402962510165209) internal successors, (300540), 183188 states have internal predecessors, (300540), 35842 states have call successors, (35842), 124 states have call predecessors, (35842), 141 states have return successors, (39156), 35894 states have call predecessors, (39156), 35828 states have call successors, (39156) [2023-11-29 07:10:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219207 states to 219207 states and 375538 transitions. [2023-11-29 07:10:07,230 INFO L78 Accepts]: Start accepts. Automaton has 219207 states and 375538 transitions. Word has length 153 [2023-11-29 07:10:07,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:07,231 INFO L495 AbstractCegarLoop]: Abstraction has 219207 states and 375538 transitions. [2023-11-29 07:10:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:10:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 219207 states and 375538 transitions. [2023-11-29 07:10:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 07:10:07,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:07,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 07:10:07,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:07,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash 784526455, now seen corresponding path program 1 times [2023-11-29 07:10:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:07,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678286785] [2023-11-29 07:10:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:10:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:10:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:10:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:10:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:10:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:10:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:10:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 07:10:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 07:10:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 07:10:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 07:10:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 07:10:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 07:10:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:10:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678286785] [2023-11-29 07:10:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678286785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 07:10:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234884280] [2023-11-29 07:10:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 07:10:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 07:10:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:10:07,931 INFO L87 Difference]: Start difference. First operand 219207 states and 375538 transitions. Second operand has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 07:10:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:18,667 INFO L93 Difference]: Finished difference Result 221799 states and 386382 transitions. [2023-11-29 07:10:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 07:10:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 135 [2023-11-29 07:10:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:19,483 INFO L225 Difference]: With dead ends: 221799 [2023-11-29 07:10:19,483 INFO L226 Difference]: Without dead ends: 220491 [2023-11-29 07:10:19,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=381, Invalid=1875, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 07:10:19,535 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1826 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 5699 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 6559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 5699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 2305 Invalid, 6559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 5699 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 07:10:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220491 states. [2023-11-29 07:10:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220491 to 219519. [2023-11-29 07:10:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219519 states, 183432 states have (on average 1.6400246412839636) internal successors, (300833), 183405 states have internal predecessors, (300833), 35942 states have call successors, (35942), 128 states have call predecessors, (35942), 144 states have return successors, (39251), 35985 states have call predecessors, (39251), 35920 states have call successors, (39251) [2023-11-29 07:10:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219519 states to 219519 states and 376026 transitions. [2023-11-29 07:10:30,587 INFO L78 Accepts]: Start accepts. Automaton has 219519 states and 376026 transitions. Word has length 135 [2023-11-29 07:10:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:30,588 INFO L495 AbstractCegarLoop]: Abstraction has 219519 states and 376026 transitions. [2023-11-29 07:10:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 07:10:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 219519 states and 376026 transitions. [2023-11-29 07:10:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 07:10:30,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:30,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 07:10:30,655 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:30,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -903256310, now seen corresponding path program 1 times [2023-11-29 07:10:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:30,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627313550] [2023-11-29 07:10:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:10:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:10:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:10:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:10:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:10:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:10:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:10:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:10:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 07:10:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 07:10:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 07:10:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:10:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:10:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 07:10:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 07:10:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 07:10:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:10:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627313550] [2023-11-29 07:10:31,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627313550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:31,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:10:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330640337] [2023-11-29 07:10:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:31,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:10:31,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:10:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:10:31,314 INFO L87 Difference]: Start difference. First operand 219519 states and 376026 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 07:10:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:42,255 INFO L93 Difference]: Finished difference Result 221939 states and 386169 transitions. [2023-11-29 07:10:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 07:10:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 157 [2023-11-29 07:10:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:43,068 INFO L225 Difference]: With dead ends: 221939 [2023-11-29 07:10:43,068 INFO L226 Difference]: Without dead ends: 220423 [2023-11-29 07:10:43,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 07:10:43,129 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1938 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:43,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 1727 Invalid, 4869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 07:10:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220423 states. [2023-11-29 07:10:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220423 to 219489. [2023-11-29 07:10:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219489 states, 183418 states have (on average 1.6400462331941248) internal successors, (300814), 183394 states have internal predecessors, (300814), 35923 states have call successors, (35923), 127 states have call predecessors, (35923), 147 states have return successors, (39228), 35967 states have call predecessors, (39228), 35901 states have call successors, (39228) [2023-11-29 07:10:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219489 states to 219489 states and 375965 transitions. [2023-11-29 07:10:54,296 INFO L78 Accepts]: Start accepts. Automaton has 219489 states and 375965 transitions. Word has length 157 [2023-11-29 07:10:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:54,296 INFO L495 AbstractCegarLoop]: Abstraction has 219489 states and 375965 transitions. [2023-11-29 07:10:54,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 07:10:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 219489 states and 375965 transitions. [2023-11-29 07:10:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 07:10:54,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:54,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 07:10:54,383 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:54,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 212216830, now seen corresponding path program 1 times [2023-11-29 07:10:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036735306] [2023-11-29 07:10:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:10:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:10:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:10:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:10:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:10:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:10:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:10:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:10:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:10:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:10:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:10:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:10:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:10:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 07:10:55,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:55,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036735306] [2023-11-29 07:10:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036735306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:55,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993290758] [2023-11-29 07:10:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:55,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:55,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:55,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:55,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:10:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:55,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 07:10:55,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 07:10:56,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993290758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:10:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2023-11-29 07:10:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243237659] [2023-11-29 07:10:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:56,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 07:10:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:10:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2023-11-29 07:10:56,018 INFO L87 Difference]: Start difference. First operand 219489 states and 375965 transitions. Second operand has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 07:11:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:04,010 INFO L93 Difference]: Finished difference Result 222301 states and 380206 transitions. [2023-11-29 07:11:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 07:11:04,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 138 [2023-11-29 07:11:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:04,673 INFO L225 Difference]: With dead ends: 222301 [2023-11-29 07:11:04,673 INFO L226 Difference]: Without dead ends: 221197 [2023-11-29 07:11:04,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 07:11:04,730 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 894 mSDsluCounter, 4812 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:04,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 5342 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:11:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221197 states. [2023-11-29 07:11:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221197 to 221087. [2023-11-29 07:11:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221087 states, 184596 states have (on average 1.6391146070337386) internal successors, (302574), 184612 states have internal predecessors, (302574), 36200 states have call successors, (36200), 236 states have call predecessors, (36200), 290 states have return successors, (39646), 36238 states have call predecessors, (39646), 36158 states have call successors, (39646) [2023-11-29 07:11:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221087 states to 221087 states and 378420 transitions. [2023-11-29 07:11:16,132 INFO L78 Accepts]: Start accepts. Automaton has 221087 states and 378420 transitions. Word has length 138 [2023-11-29 07:11:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:16,133 INFO L495 AbstractCegarLoop]: Abstraction has 221087 states and 378420 transitions. [2023-11-29 07:11:16,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 07:11:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 221087 states and 378420 transitions. [2023-11-29 07:11:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 07:11:16,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:16,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:16,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:11:16,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 07:11:16,402 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:16,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1900847827, now seen corresponding path program 1 times [2023-11-29 07:11:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359139075] [2023-11-29 07:11:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:16,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:11:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:11:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:11:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:11:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:11:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:11:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:11:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:11:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:11:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:11:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:11:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:11:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:11:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:11:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359139075] [2023-11-29 07:11:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359139075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:16,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 07:11:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711281286] [2023-11-29 07:11:16,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:11:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:11:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:11:16,836 INFO L87 Difference]: Start difference. First operand 221087 states and 378420 transitions. Second operand has 17 states, 16 states have (on average 5.875) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 07:11:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:30,669 INFO L93 Difference]: Finished difference Result 225346 states and 391828 transitions. [2023-11-29 07:11:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 07:11:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 139 [2023-11-29 07:11:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:31,515 INFO L225 Difference]: With dead ends: 225346 [2023-11-29 07:11:31,516 INFO L226 Difference]: Without dead ends: 223125 [2023-11-29 07:11:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 07:11:31,574 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 3157 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 5963 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 7219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 5963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:31,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 2196 Invalid, 7219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1256 Valid, 5963 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 07:11:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223125 states. [2023-11-29 07:11:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223125 to 221171. [2023-11-29 07:11:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221171 states, 184641 states have (on average 1.6389588444603311) internal successors, (302619), 184665 states have internal predecessors, (302619), 36211 states have call successors, (36211), 236 states have call predecessors, (36211), 318 states have return successors, (39741), 36269 states have call predecessors, (39741), 36169 states have call successors, (39741) [2023-11-29 07:11:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221171 states to 221171 states and 378571 transitions. [2023-11-29 07:11:43,611 INFO L78 Accepts]: Start accepts. Automaton has 221171 states and 378571 transitions. Word has length 139 [2023-11-29 07:11:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:43,611 INFO L495 AbstractCegarLoop]: Abstraction has 221171 states and 378571 transitions. [2023-11-29 07:11:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 11 states have internal predecessors, (94), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 07:11:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 221171 states and 378571 transitions. [2023-11-29 07:11:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 07:11:43,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:43,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:43,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 07:11:43,685 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:43,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash 305259626, now seen corresponding path program 1 times [2023-11-29 07:11:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749554292] [2023-11-29 07:11:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:43,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:11:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 07:11:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 07:11:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 07:11:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:11:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:11:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:11:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:11:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:11:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:11:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 07:11:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 07:11:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 07:11:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 07:11:44,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749554292] [2023-11-29 07:11:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749554292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:11:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941923312] [2023-11-29 07:11:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:44,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:44,184 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:44,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963a1aaf-e1ab-471a-93f7-4fa170af785b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:11:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 07:11:44,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:11:45,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:11:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 07:11:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941923312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:11:46,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:11:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 53 [2023-11-29 07:11:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091188539] [2023-11-29 07:11:46,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:11:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 07:11:46,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 07:11:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2585, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 07:11:46,201 INFO L87 Difference]: Start difference. First operand 221171 states and 378571 transitions. Second operand has 53 states, 44 states have (on average 6.136363636363637) internal successors, (270), 46 states have internal predecessors, (270), 16 states have call successors, (52), 13 states have call predecessors, (52), 18 states have return successors, (42), 10 states have call predecessors, (42), 15 states have call successors, (42)