./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/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_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/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_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/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 7d9bd30209b011511ea69bcafefe21478bc06dd6e294313a5c1455634308a9dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:36:15,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:36:15,427 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:36:15,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:36:15,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:36:15,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:36:15,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:36:15,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:36:15,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:36:15,457 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:36:15,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:36:15,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:36:15,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:36:15,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:36:15,460 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:36:15,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:36:15,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:36:15,461 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:36:15,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:36:15,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:36:15,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:36:15,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:36:15,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:36:15,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:36:15,465 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:36:15,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:36:15,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:36:15,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:36:15,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:36:15,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:36:15,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:36:15,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:36:15,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:36:15,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:36:15,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:36:15,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:36:15,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:36:15,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:36:15,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:36:15,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:36:15,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:36:15,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:36:15,470 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_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9bd30209b011511ea69bcafefe21478bc06dd6e294313a5c1455634308a9dd [2023-11-29 02:36:15,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:36:15,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:36:15,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:36:15,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:36:15,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:36:15,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/email_spec3_product25.cil.c [2023-11-29 02:36:18,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:36:18,834 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:36:18,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/sv-benchmarks/c/product-lines/email_spec3_product25.cil.c [2023-11-29 02:36:18,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/data/5db958aed/6e13c783e9914a66a5b872889dc51870/FLAGcb909ddbb [2023-11-29 02:36:18,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/data/5db958aed/6e13c783e9914a66a5b872889dc51870 [2023-11-29 02:36:18,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:36:18,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:36:18,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:36:18,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:36:18,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:36:18,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:36:18" (1/1) ... [2023-11-29 02:36:18,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bff231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:18, skipping insertion in model container [2023-11-29 02:36:18,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:36:18" (1/1) ... [2023-11-29 02:36:18,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:36:19,480 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_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/sv-benchmarks/c/product-lines/email_spec3_product25.cil.c[64426,64439] [2023-11-29 02:36:19,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:36:19,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:36:19,512 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-11-29 02:36:19,514 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [460] [2023-11-29 02:36:19,514 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [826] [2023-11-29 02:36:19,514 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [844] [2023-11-29 02:36:19,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1073] [2023-11-29 02:36:19,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2153] [2023-11-29 02:36:19,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2202] [2023-11-29 02:36:19,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2548] [2023-11-29 02:36:19,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2607] [2023-11-29 02:36:19,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2703] [2023-11-29 02:36:19,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2991] [2023-11-29 02:36:19,602 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_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/sv-benchmarks/c/product-lines/email_spec3_product25.cil.c[64426,64439] [2023-11-29 02:36:19,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:36:19,629 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:36:19,637 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:36:19,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19 WrapperNode [2023-11-29 02:36:19,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:36:19,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:36:19,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:36:19,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:36:19,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,720 INFO L138 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1076 [2023-11-29 02:36:19,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:36:19,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:36:19,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:36:19,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:36:19,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,767 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 02:36:19,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:36:19,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:36:19,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:36:19,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:36:19,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (1/1) ... [2023-11-29 02:36:19,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:36:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:19,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:36:19,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:36:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-29 02:36:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-29 02:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-29 02:36:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-29 02:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2023-11-29 02:36:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2023-11-29 02:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-29 02:36:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-29 02:36:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-29 02:36:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-29 02:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-29 02:36:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-29 02:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-29 02:36:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-29 02:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-29 02:36:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-29 02:36:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-29 02:36:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-29 02:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-29 02:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-29 02:36:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-29 02:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-29 02:36:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-29 02:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:36:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-29 02:36:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-29 02:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-29 02:36:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-29 02:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-29 02:36:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-29 02:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-29 02:36:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-29 02:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 02:36:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 02:36:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-29 02:36:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-29 02:36:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-29 02:36:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-29 02:36:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-29 02:36:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-29 02:36:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-29 02:36:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-29 02:36:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-29 02:36:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-29 02:36:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-29 02:36:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-29 02:36:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-29 02:36:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-29 02:36:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:36:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:36:20,095 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:36:20,098 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:36:20,844 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:36:20,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:36:20,939 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:36:20,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:36:20 BoogieIcfgContainer [2023-11-29 02:36:20,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:36:20,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:36:20,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:36:20,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:36:20,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:36:18" (1/3) ... [2023-11-29 02:36:20,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3f981e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:36:20, skipping insertion in model container [2023-11-29 02:36:20,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:36:19" (2/3) ... [2023-11-29 02:36:20,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3f981e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:36:20, skipping insertion in model container [2023-11-29 02:36:20,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:36:20" (3/3) ... [2023-11-29 02:36:20,949 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product25.cil.c [2023-11-29 02:36:20,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:36:20,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:36:21,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:36:21,041 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;@d4f8b28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:36:21,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:36:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 371 states, 283 states have (on average 1.6148409893992932) internal successors, (457), 288 states have internal predecessors, (457), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-29 02:36:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:36:21,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:21,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:36:21,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:21,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash 254995704, now seen corresponding path program 1 times [2023-11-29 02:36:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:21,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423524820] [2023-11-29 02:36:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:36:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:36:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:36:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:36:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 02:36:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:36:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 02:36:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 02:36:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:36:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:36:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 02:36:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 02:36:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:36:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 02:36:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 02:36:21,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423524820] [2023-11-29 02:36:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423524820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041065158] [2023-11-29 02:36:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:21,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:21,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:21,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:21,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:36:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:36:22,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 02:36:22,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:22,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041065158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:22,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:36:22,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-29 02:36:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291747234] [2023-11-29 02:36:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:36:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:36:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:36:22,308 INFO L87 Difference]: Start difference. First operand has 371 states, 283 states have (on average 1.6148409893992932) internal successors, (457), 288 states have internal predecessors, (457), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 02:36:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:22,403 INFO L93 Difference]: Finished difference Result 557 states and 861 transitions. [2023-11-29 02:36:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:36:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 123 [2023-11-29 02:36:22,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:22,423 INFO L225 Difference]: With dead ends: 557 [2023-11-29 02:36:22,423 INFO L226 Difference]: Without dead ends: 367 [2023-11-29 02:36:22,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 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 02:36:22,433 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:36:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-29 02:36:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2023-11-29 02:36:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 281 states have (on average 1.601423487544484) internal successors, (450), 284 states have internal predecessors, (450), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-29 02:36:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 571 transitions. [2023-11-29 02:36:22,513 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 571 transitions. Word has length 123 [2023-11-29 02:36:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:22,515 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 571 transitions. [2023-11-29 02:36:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 02:36:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 571 transitions. [2023-11-29 02:36:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 02:36:22,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:22,521 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 02:36:22,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:36:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:36:22,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:22,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2120883837, now seen corresponding path program 1 times [2023-11-29 02:36:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211453306] [2023-11-29 02:36:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:36:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:36:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:36:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:36:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 02:36:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:36:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:36:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 02:36:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:36:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 02:36:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:36:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,055 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 02:36:23,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:23,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211453306] [2023-11-29 02:36:23,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211453306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:23,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304141757] [2023-11-29 02:36:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:23,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:23,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:23,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:23,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:36:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:36:23,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:23,423 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 02:36:23,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304141757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:23,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:36:23,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 02:36:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481801190] [2023-11-29 02:36:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:36:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:36:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:36:23,427 INFO L87 Difference]: Start difference. First operand 367 states and 571 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 02:36:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:23,502 INFO L93 Difference]: Finished difference Result 552 states and 841 transitions. [2023-11-29 02:36:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:36:23,503 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 02:36:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:23,508 INFO L225 Difference]: With dead ends: 552 [2023-11-29 02:36:23,508 INFO L226 Difference]: Without dead ends: 369 [2023-11-29 02:36:23,510 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 02:36:23,511 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 0 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:23,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1107 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:36:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-29 02:36:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-29 02:36:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 283 states have (on average 1.5971731448763251) internal successors, (452), 286 states have internal predecessors, (452), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-29 02:36:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 573 transitions. [2023-11-29 02:36:23,543 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 573 transitions. Word has length 106 [2023-11-29 02:36:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:23,543 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 573 transitions. [2023-11-29 02:36:23,544 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 02:36:23,544 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 573 transitions. [2023-11-29 02:36:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 02:36:23,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:23,547 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] [2023-11-29 02:36:23,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:36:23,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:23,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1999952474, now seen corresponding path program 1 times [2023-11-29 02:36:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120111678] [2023-11-29 02:36:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:23,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:36:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:36:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:36:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 02:36:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:36:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:36:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:36:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 02:36:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:36:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:36:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:36:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:23,975 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 02:36:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120111678] [2023-11-29 02:36:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120111678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610625351] [2023-11-29 02:36:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:23,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:23,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:36:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:36:24,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 02:36:24,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610625351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:24,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:36:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 02:36:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000495252] [2023-11-29 02:36:24,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:24,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:36:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:36:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:36:24,362 INFO L87 Difference]: Start difference. First operand 369 states and 573 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (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 02:36:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:24,439 INFO L93 Difference]: Finished difference Result 786 states and 1238 transitions. [2023-11-29 02:36:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:36:24,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (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 111 [2023-11-29 02:36:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:24,444 INFO L225 Difference]: With dead ends: 786 [2023-11-29 02:36:24,444 INFO L226 Difference]: Without dead ends: 439 [2023-11-29 02:36:24,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 02:36:24,448 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 129 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:24,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1078 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:36:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-11-29 02:36:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 434. [2023-11-29 02:36:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 334 states have (on average 1.6137724550898203) internal successors, (539), 337 states have internal predecessors, (539), 76 states have call successors, (76), 24 states have call predecessors, (76), 23 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 02:36:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 688 transitions. [2023-11-29 02:36:24,478 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 688 transitions. Word has length 111 [2023-11-29 02:36:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:24,478 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 688 transitions. [2023-11-29 02:36:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (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 02:36:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 688 transitions. [2023-11-29 02:36:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 02:36:24,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:24,482 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] [2023-11-29 02:36:24,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:36:24,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:24,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:24,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1049758509, now seen corresponding path program 1 times [2023-11-29 02:36:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:24,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106326145] [2023-11-29 02:36:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:36:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:36:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:36:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:36:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:36:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 02:36:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 02:36:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:36:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 02:36:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:36:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 02:36:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:24,948 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 02:36:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106326145] [2023-11-29 02:36:24,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106326145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859926277] [2023-11-29 02:36:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:24,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:24,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:24,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:36:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:36:25,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:25,347 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 02:36:25,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859926277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:36:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 02:36:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876400091] [2023-11-29 02:36:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:36:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:36:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:36:25,351 INFO L87 Difference]: Start difference. First operand 434 states and 688 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 02:36:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:25,485 INFO L93 Difference]: Finished difference Result 863 states and 1370 transitions. [2023-11-29 02:36:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:36:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 112 [2023-11-29 02:36:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:25,491 INFO L225 Difference]: With dead ends: 863 [2023-11-29 02:36:25,491 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 02:36:25,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 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 02:36:25,494 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 8 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:25,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2169 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:36:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 02:36:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2023-11-29 02:36:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 335 states have (on average 1.6119402985074627) internal successors, (540), 339 states have internal predecessors, (540), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 72 states have call predecessors, (75), 73 states have call successors, (75) [2023-11-29 02:36:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 691 transitions. [2023-11-29 02:36:25,522 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 691 transitions. Word has length 112 [2023-11-29 02:36:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:25,523 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 691 transitions. [2023-11-29 02:36:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 02:36:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 691 transitions. [2023-11-29 02:36:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 02:36:25,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:25,527 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] [2023-11-29 02:36:25,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:36:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:25,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:25,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1135685333, now seen corresponding path program 1 times [2023-11-29 02:36:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776896643] [2023-11-29 02:36:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 02:36:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:36:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 02:36:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 02:36:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:36:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 02:36:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 02:36:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:36:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:36:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 02:36:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:36:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:36:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 02:36:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,050 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 02:36:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:26,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776896643] [2023-11-29 02:36:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776896643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64710880] [2023-11-29 02:36:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:26,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:26,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:26,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:26,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:36:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:36:26,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:26,437 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 02:36:26,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:36:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64710880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:26,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:36:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-29 02:36:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791309902] [2023-11-29 02:36:26,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:26,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:36:26,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:36:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:36:26,441 INFO L87 Difference]: Start difference. First operand 436 states and 691 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (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 02:36:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:26,587 INFO L93 Difference]: Finished difference Result 865 states and 1375 transitions. [2023-11-29 02:36:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:36:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (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 131 [2023-11-29 02:36:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:26,592 INFO L225 Difference]: With dead ends: 865 [2023-11-29 02:36:26,592 INFO L226 Difference]: Without dead ends: 438 [2023-11-29 02:36:26,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 157 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 02:36:26,595 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 8 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:26,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:36:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-29 02:36:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2023-11-29 02:36:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 336 states have (on average 1.6101190476190477) internal successors, (541), 341 states have internal predecessors, (541), 76 states have call successors, (76), 24 states have call predecessors, (76), 25 states have return successors, (80), 72 states have call predecessors, (80), 73 states have call successors, (80) [2023-11-29 02:36:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 697 transitions. [2023-11-29 02:36:26,620 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 697 transitions. Word has length 131 [2023-11-29 02:36:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:26,620 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 697 transitions. [2023-11-29 02:36:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (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 02:36:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 697 transitions. [2023-11-29 02:36:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 02:36:26,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:26,624 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] [2023-11-29 02:36:26,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:36:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:26,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash -619740457, now seen corresponding path program 1 times [2023-11-29 02:36:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997909884] [2023-11-29 02:36:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 02:36:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:36:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:36:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:36:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:36:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:36:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:36:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 02:36:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:36:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:27,046 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 02:36:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997909884] [2023-11-29 02:36:27,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997909884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:27,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:36:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525050312] [2023-11-29 02:36:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:36:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:36:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:36:27,048 INFO L87 Difference]: Start difference. First operand 438 states and 697 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 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 02:36:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:29,602 INFO L93 Difference]: Finished difference Result 1001 states and 1623 transitions. [2023-11-29 02:36:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:36:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 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 114 [2023-11-29 02:36:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:29,609 INFO L225 Difference]: With dead ends: 1001 [2023-11-29 02:36:29,609 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 02:36:29,611 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 02:36:29,612 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1248 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:29,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1193 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:36:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 02:36:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 438. [2023-11-29 02:36:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 336 states have (on average 1.6101190476190477) internal successors, (541), 341 states have internal predecessors, (541), 76 states have call successors, (76), 24 states have call predecessors, (76), 25 states have return successors, (79), 72 states have call predecessors, (79), 73 states have call successors, (79) [2023-11-29 02:36:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 696 transitions. [2023-11-29 02:36:29,662 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 696 transitions. Word has length 114 [2023-11-29 02:36:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:29,662 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 696 transitions. [2023-11-29 02:36:29,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 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 02:36:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 696 transitions. [2023-11-29 02:36:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:36:29,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:29,666 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] [2023-11-29 02:36:29,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:36:29,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:29,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1010657811, now seen corresponding path program 2 times [2023-11-29 02:36:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:29,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162874866] [2023-11-29 02:36:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:29,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:36:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 02:36:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 02:36:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:36:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 02:36:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 02:36:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:36:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:36:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:36:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:36:29,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162874866] [2023-11-29 02:36:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162874866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:36:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127927789] [2023-11-29 02:36:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:36:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:36:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:36:29,922 INFO L87 Difference]: Start difference. First operand 438 states and 696 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 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 02:36:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:32,156 INFO L93 Difference]: Finished difference Result 1003 states and 1626 transitions. [2023-11-29 02:36:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:36:32,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 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 115 [2023-11-29 02:36:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:32,162 INFO L225 Difference]: With dead ends: 1003 [2023-11-29 02:36:32,162 INFO L226 Difference]: Without dead ends: 584 [2023-11-29 02:36:32,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 02:36:32,164 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1245 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1193 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 02:36:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-29 02:36:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 440. [2023-11-29 02:36:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 337 states have (on average 1.6083086053412463) internal successors, (542), 343 states have internal predecessors, (542), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (81), 72 states have call predecessors, (81), 73 states have call successors, (81) [2023-11-29 02:36:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 699 transitions. [2023-11-29 02:36:32,195 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 699 transitions. Word has length 115 [2023-11-29 02:36:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 699 transitions. [2023-11-29 02:36:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 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 02:36:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 699 transitions. [2023-11-29 02:36:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 02:36:32,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:32,198 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 02:36:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:36:32,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:32,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1758020146, now seen corresponding path program 1 times [2023-11-29 02:36:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234896213] [2023-11-29 02:36:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:36:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:36:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 02:36:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 02:36:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:36:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 02:36:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 02:36:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:36:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:32,457 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 02:36:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234896213] [2023-11-29 02:36:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234896213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 02:36:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302674022] [2023-11-29 02:36:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:36:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:36:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:36:32,459 INFO L87 Difference]: Start difference. First operand 440 states and 699 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 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 02:36:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:35,305 INFO L93 Difference]: Finished difference Result 1001 states and 1621 transitions. [2023-11-29 02:36:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:36:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 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 116 [2023-11-29 02:36:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:35,310 INFO L225 Difference]: With dead ends: 1001 [2023-11-29 02:36:35,310 INFO L226 Difference]: Without dead ends: 584 [2023-11-29 02:36:35,312 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 02:36:35,313 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1254 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 4661 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 5110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 4661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:35,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1653 Invalid, 5110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 4661 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:36:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-29 02:36:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 440. [2023-11-29 02:36:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 337 states have (on average 1.6083086053412463) internal successors, (542), 343 states have internal predecessors, (542), 76 states have call successors, (76), 24 states have call predecessors, (76), 26 states have return successors, (80), 72 states have call predecessors, (80), 73 states have call successors, (80) [2023-11-29 02:36:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 698 transitions. [2023-11-29 02:36:35,342 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 698 transitions. Word has length 116 [2023-11-29 02:36:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:35,343 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 698 transitions. [2023-11-29 02:36:35,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 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 02:36:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 698 transitions. [2023-11-29 02:36:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 02:36:35,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:35,345 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 02:36:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:36:35,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 787369694, now seen corresponding path program 1 times [2023-11-29 02:36:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720039665] [2023-11-29 02:36:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:36:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:36:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:36:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 02:36:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 02:36:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:36:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 02:36:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:36:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 02:36:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 02:36:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 02:36:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:36:35,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:35,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720039665] [2023-11-29 02:36:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720039665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:35,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 02:36:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005716788] [2023-11-29 02:36:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:35,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:36:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:36:35,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:36:35,619 INFO L87 Difference]: Start difference. First operand 440 states and 698 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 02:36:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:38,176 INFO L93 Difference]: Finished difference Result 1003 states and 1627 transitions. [2023-11-29 02:36:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:36:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 135 [2023-11-29 02:36:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:38,182 INFO L225 Difference]: With dead ends: 1003 [2023-11-29 02:36:38,182 INFO L226 Difference]: Without dead ends: 586 [2023-11-29 02:36:38,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 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 02:36:38,187 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1251 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 4694 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 4694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:38,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1652 Invalid, 5142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 4694 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:36:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-29 02:36:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 442. [2023-11-29 02:36:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 338 states have (on average 1.606508875739645) internal successors, (543), 345 states have internal predecessors, (543), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (85), 72 states have call predecessors, (85), 73 states have call successors, (85) [2023-11-29 02:36:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 704 transitions. [2023-11-29 02:36:38,231 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 704 transitions. Word has length 135 [2023-11-29 02:36:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:38,232 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 704 transitions. [2023-11-29 02:36:38,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-29 02:36:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 704 transitions. [2023-11-29 02:36:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 02:36:38,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:38,236 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] [2023-11-29 02:36:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:36:38,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:38,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash -382099701, now seen corresponding path program 1 times [2023-11-29 02:36:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:38,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836450115] [2023-11-29 02:36:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 02:36:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:36:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 02:36:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:36:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:36:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:36:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:36:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:36:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 02:36:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 02:36:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 02:36:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,435 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 02:36:38,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:38,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836450115] [2023-11-29 02:36:38,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836450115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:36:38,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806717883] [2023-11-29 02:36:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:38,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:38,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:36:38,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:36:38,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:36:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:38,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:36:38,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:38,748 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 02:36:38,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:36:38,839 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 02:36:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806717883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:36:38,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:36:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-11-29 02:36:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452579139] [2023-11-29 02:36:38,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:36:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:36:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:36:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:36:38,842 INFO L87 Difference]: Start difference. First operand 442 states and 704 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-29 02:36:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:40,767 INFO L93 Difference]: Finished difference Result 1189 states and 2004 transitions. [2023-11-29 02:36:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:36:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 136 [2023-11-29 02:36:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:40,774 INFO L225 Difference]: With dead ends: 1189 [2023-11-29 02:36:40,774 INFO L226 Difference]: Without dead ends: 1006 [2023-11-29 02:36:40,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:36:40,775 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1732 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:40,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1574 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:36:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-11-29 02:36:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 847. [2023-11-29 02:36:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 664 states have (on average 1.661144578313253) internal successors, (1103), 671 states have internal predecessors, (1103), 155 states have call successors, (155), 24 states have call predecessors, (155), 27 states have return successors, (174), 151 states have call predecessors, (174), 152 states have call successors, (174) [2023-11-29 02:36:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1432 transitions. [2023-11-29 02:36:40,842 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1432 transitions. Word has length 136 [2023-11-29 02:36:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:40,843 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1432 transitions. [2023-11-29 02:36:40,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (42), 6 states have call predecessors, (42), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-29 02:36:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1432 transitions. [2023-11-29 02:36:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:36:40,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:40,849 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 02:36:40,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:36:41,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:36:41,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:41,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1333165520, now seen corresponding path program 1 times [2023-11-29 02:36:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:41,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838291720] [2023-11-29 02:36:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:36:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 02:36:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 02:36:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 02:36:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:36:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:36:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:36:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 02:36:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:41,176 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 02:36:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838291720] [2023-11-29 02:36:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838291720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:41,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:41,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954809541] [2023-11-29 02:36:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:41,180 INFO L87 Difference]: Start difference. First operand 847 states and 1432 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 02:36:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:42,652 INFO L93 Difference]: Finished difference Result 2185 states and 3783 transitions. [2023-11-29 02:36:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:42,653 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 02:36:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:42,661 INFO L225 Difference]: With dead ends: 2185 [2023-11-29 02:36:42,661 INFO L226 Difference]: Without dead ends: 1398 [2023-11-29 02:36:42,664 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 02:36:42,664 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1368 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:42,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 905 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:36:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-29 02:36:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1249. [2023-11-29 02:36:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 987 states have (on average 1.6717325227963526) internal successors, (1650), 994 states have internal predecessors, (1650), 234 states have call successors, (234), 24 states have call predecessors, (234), 27 states have return successors, (263), 230 states have call predecessors, (263), 231 states have call successors, (263) [2023-11-29 02:36:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2147 transitions. [2023-11-29 02:36:42,722 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2147 transitions. Word has length 124 [2023-11-29 02:36:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:42,722 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 2147 transitions. [2023-11-29 02:36:42,722 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 02:36:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2147 transitions. [2023-11-29 02:36:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 02:36:42,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:42,729 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 02:36:42,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:36:42,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:42,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2032222432, now seen corresponding path program 1 times [2023-11-29 02:36:42,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:42,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403028341] [2023-11-29 02:36:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:36:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:36:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:36:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 02:36:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:36:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 02:36:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:36:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:36:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:42,829 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 02:36:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403028341] [2023-11-29 02:36:42,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403028341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:42,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:42,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:42,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019889681] [2023-11-29 02:36:42,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:42,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:42,831 INFO L87 Difference]: Start difference. First operand 1249 states and 2147 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 02:36:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:44,566 INFO L93 Difference]: Finished difference Result 3168 states and 5530 transitions. [2023-11-29 02:36:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:44,567 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 02:36:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:44,578 INFO L225 Difference]: With dead ends: 3168 [2023-11-29 02:36:44,578 INFO L226 Difference]: Without dead ends: 2029 [2023-11-29 02:36:44,582 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 02:36:44,583 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1360 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:44,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 886 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:36:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2023-11-29 02:36:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1880. [2023-11-29 02:36:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1499 states have (on average 1.6784523015343562) internal successors, (2516), 1506 states have internal predecessors, (2516), 353 states have call successors, (353), 24 states have call predecessors, (353), 27 states have return successors, (382), 349 states have call predecessors, (382), 350 states have call successors, (382) [2023-11-29 02:36:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 3251 transitions. [2023-11-29 02:36:44,692 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 3251 transitions. Word has length 125 [2023-11-29 02:36:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:44,692 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 3251 transitions. [2023-11-29 02:36:44,692 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 02:36:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 3251 transitions. [2023-11-29 02:36:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 02:36:44,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:44,702 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] [2023-11-29 02:36:44,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:36:44,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:44,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1988778286, now seen corresponding path program 1 times [2023-11-29 02:36:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:44,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799797099] [2023-11-29 02:36:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:44,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 02:36:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:36:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 02:36:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:36:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:36:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:36:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 02:36:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 02:36:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:44,810 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 02:36:44,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799797099] [2023-11-29 02:36:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799797099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:44,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539272839] [2023-11-29 02:36:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:44,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:44,812 INFO L87 Difference]: Start difference. First operand 1880 states and 3251 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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 02:36:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:46,500 INFO L93 Difference]: Finished difference Result 4648 states and 8182 transitions. [2023-11-29 02:36:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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 126 [2023-11-29 02:36:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:46,518 INFO L225 Difference]: With dead ends: 4648 [2023-11-29 02:36:46,518 INFO L226 Difference]: Without dead ends: 2998 [2023-11-29 02:36:46,538 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 02:36:46,539 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1361 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:46,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 879 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:36:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2023-11-29 02:36:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2849. [2023-11-29 02:36:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2306 states have (on average 1.6843018213356462) internal successors, (3884), 2313 states have internal predecessors, (3884), 515 states have call successors, (515), 24 states have call predecessors, (515), 27 states have return successors, (560), 511 states have call predecessors, (560), 512 states have call successors, (560) [2023-11-29 02:36:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4959 transitions. [2023-11-29 02:36:46,707 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4959 transitions. Word has length 126 [2023-11-29 02:36:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:46,707 INFO L495 AbstractCegarLoop]: Abstraction has 2849 states and 4959 transitions. [2023-11-29 02:36:46,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (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 02:36:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4959 transitions. [2023-11-29 02:36:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 02:36:46,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:46,735 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 02:36:46,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:36:46,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:46,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 629922397, now seen corresponding path program 1 times [2023-11-29 02:36:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330853042] [2023-11-29 02:36:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:36:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:36:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 02:36:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:36:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 02:36:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:36:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 02:36:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 02:36:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 02:36:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 02:36:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 02:36:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:46,890 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 02:36:46,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330853042] [2023-11-29 02:36:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330853042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:46,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113302427] [2023-11-29 02:36:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:46,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:46,892 INFO L87 Difference]: Start difference. First operand 2849 states and 4959 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 02:36:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:48,551 INFO L93 Difference]: Finished difference Result 6988 states and 12387 transitions. [2023-11-29 02:36:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:48,552 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 02:36:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:48,575 INFO L225 Difference]: With dead ends: 6988 [2023-11-29 02:36:48,575 INFO L226 Difference]: Without dead ends: 4566 [2023-11-29 02:36:48,580 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 02:36:48,581 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1357 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:48,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 878 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:36:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2023-11-29 02:36:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4417. [2023-11-29 02:36:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 3629 states have (on average 1.6886194543951503) internal successors, (6128), 3636 states have internal predecessors, (6128), 760 states have call successors, (760), 24 states have call predecessors, (760), 27 states have return successors, (831), 756 states have call predecessors, (831), 757 states have call successors, (831) [2023-11-29 02:36:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 7719 transitions. [2023-11-29 02:36:48,886 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 7719 transitions. Word has length 145 [2023-11-29 02:36:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:48,887 INFO L495 AbstractCegarLoop]: Abstraction has 4417 states and 7719 transitions. [2023-11-29 02:36:48,887 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 02:36:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 7719 transitions. [2023-11-29 02:36:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 02:36:48,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:48,914 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] [2023-11-29 02:36:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:36:48,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1797316430, now seen corresponding path program 1 times [2023-11-29 02:36:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753986291] [2023-11-29 02:36:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:36:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 02:36:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 02:36:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 02:36:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:36:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:36:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 02:36:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:36:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:49,053 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 02:36:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753986291] [2023-11-29 02:36:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753986291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227030450] [2023-11-29 02:36:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:49,056 INFO L87 Difference]: Start difference. First operand 4417 states and 7719 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 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 02:36:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:50,995 INFO L93 Difference]: Finished difference Result 10941 states and 19454 transitions. [2023-11-29 02:36:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 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 128 [2023-11-29 02:36:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:51,042 INFO L225 Difference]: With dead ends: 10941 [2023-11-29 02:36:51,042 INFO L226 Difference]: Without dead ends: 7238 [2023-11-29 02:36:51,052 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 02:36:51,053 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1360 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:51,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 914 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:36:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2023-11-29 02:36:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 7089. [2023-11-29 02:36:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 5808 states have (on average 1.6825068870523416) internal successors, (9772), 5815 states have internal predecessors, (9772), 1253 states have call successors, (1253), 24 states have call predecessors, (1253), 27 states have return successors, (1368), 1249 states have call predecessors, (1368), 1250 states have call successors, (1368) [2023-11-29 02:36:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 12393 transitions. [2023-11-29 02:36:51,312 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 12393 transitions. Word has length 128 [2023-11-29 02:36:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:51,312 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 12393 transitions. [2023-11-29 02:36:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 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 02:36:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 12393 transitions. [2023-11-29 02:36:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 02:36:51,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:51,332 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] [2023-11-29 02:36:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:36:51,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:51,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash -902914087, now seen corresponding path program 1 times [2023-11-29 02:36:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:51,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73129857] [2023-11-29 02:36:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 02:36:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:36:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:36:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 02:36:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:36:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:36:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 02:36:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:36:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:36:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 02:36:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 02:36:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:51,446 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 02:36:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73129857] [2023-11-29 02:36:51,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73129857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331056042] [2023-11-29 02:36:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:51,448 INFO L87 Difference]: Start difference. First operand 7089 states and 12393 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 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 02:36:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:53,558 INFO L93 Difference]: Finished difference Result 18076 states and 32138 transitions. [2023-11-29 02:36:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 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 147 [2023-11-29 02:36:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:53,596 INFO L225 Difference]: With dead ends: 18076 [2023-11-29 02:36:53,596 INFO L226 Difference]: Without dead ends: 12067 [2023-11-29 02:36:53,611 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 02:36:53,612 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1358 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:53,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 885 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:36:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12067 states. [2023-11-29 02:36:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12067 to 11918. [2023-11-29 02:36:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11918 states, 9815 states have (on average 1.682322975038207) internal successors, (16512), 9822 states have internal predecessors, (16512), 2075 states have call successors, (2075), 24 states have call predecessors, (2075), 27 states have return successors, (2268), 2071 states have call predecessors, (2268), 2072 states have call successors, (2268) [2023-11-29 02:36:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11918 states to 11918 states and 20855 transitions. [2023-11-29 02:36:54,076 INFO L78 Accepts]: Start accepts. Automaton has 11918 states and 20855 transitions. Word has length 147 [2023-11-29 02:36:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:54,077 INFO L495 AbstractCegarLoop]: Abstraction has 11918 states and 20855 transitions. [2023-11-29 02:36:54,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 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 02:36:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 11918 states and 20855 transitions. [2023-11-29 02:36:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 02:36:54,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:54,116 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] [2023-11-29 02:36:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:36:54,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:54,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1430514050, now seen corresponding path program 1 times [2023-11-29 02:36:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594878282] [2023-11-29 02:36:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:36:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 02:36:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 02:36:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:36:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:36:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:36:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 02:36:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 02:36:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 02:36:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 02:36:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 02:36:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:54,251 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 02:36:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594878282] [2023-11-29 02:36:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594878282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:54,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:54,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591575642] [2023-11-29 02:36:54,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:54,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:54,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:54,254 INFO L87 Difference]: Start difference. First operand 11918 states and 20855 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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 02:36:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:56,296 INFO L93 Difference]: Finished difference Result 28622 states and 50691 transitions. [2023-11-29 02:36:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:56,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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 148 [2023-11-29 02:36:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:56,351 INFO L225 Difference]: With dead ends: 28622 [2023-11-29 02:36:56,351 INFO L226 Difference]: Without dead ends: 18739 [2023-11-29 02:36:56,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 02:36:56,373 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1353 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:56,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 858 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:36:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18739 states. [2023-11-29 02:36:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18739 to 18590. [2023-11-29 02:36:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18590 states, 15284 states have (on average 1.6601020675215912) internal successors, (25373), 15291 states have internal predecessors, (25373), 3278 states have call successors, (3278), 24 states have call predecessors, (3278), 27 states have return successors, (3615), 3274 states have call predecessors, (3615), 3275 states have call successors, (3615) [2023-11-29 02:36:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18590 states to 18590 states and 32266 transitions. [2023-11-29 02:36:57,096 INFO L78 Accepts]: Start accepts. Automaton has 18590 states and 32266 transitions. Word has length 148 [2023-11-29 02:36:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:36:57,096 INFO L495 AbstractCegarLoop]: Abstraction has 18590 states and 32266 transitions. [2023-11-29 02:36:57,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 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 02:36:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18590 states and 32266 transitions. [2023-11-29 02:36:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 02:36:57,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:36:57,125 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] [2023-11-29 02:36:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:36:57,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:36:57,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:36:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash -866755144, now seen corresponding path program 1 times [2023-11-29 02:36:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:36:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712228400] [2023-11-29 02:36:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:36:57,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:36:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:36:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:36:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:36:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:36:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:36:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:36:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:36:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:36:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:36:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:36:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 02:36:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:36:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 02:36:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 02:36:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 02:36:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 02:36:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 02:36:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:57,253 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 02:36:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712228400] [2023-11-29 02:36:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712228400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:36:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:36:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:36:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757011177] [2023-11-29 02:36:57,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:36:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:36:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:36:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:36:57,256 INFO L87 Difference]: Start difference. First operand 18590 states and 32266 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 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 02:36:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:36:59,765 INFO L93 Difference]: Finished difference Result 49255 states and 87012 transitions. [2023-11-29 02:36:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:36:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 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 149 [2023-11-29 02:36:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:36:59,864 INFO L225 Difference]: With dead ends: 49255 [2023-11-29 02:36:59,864 INFO L226 Difference]: Without dead ends: 33320 [2023-11-29 02:36:59,903 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 02:36:59,904 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1348 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:36:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 880 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:36:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33320 states. [2023-11-29 02:37:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33320 to 33171. [2023-11-29 02:37:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33171 states, 27415 states have (on average 1.657340871785519) internal successors, (45436), 27422 states have internal predecessors, (45436), 5728 states have call successors, (5728), 24 states have call predecessors, (5728), 27 states have return successors, (6339), 5724 states have call predecessors, (6339), 5725 states have call successors, (6339) [2023-11-29 02:37:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33171 states to 33171 states and 57503 transitions. [2023-11-29 02:37:01,552 INFO L78 Accepts]: Start accepts. Automaton has 33171 states and 57503 transitions. Word has length 149 [2023-11-29 02:37:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:01,553 INFO L495 AbstractCegarLoop]: Abstraction has 33171 states and 57503 transitions. [2023-11-29 02:37:01,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 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 02:37:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 33171 states and 57503 transitions. [2023-11-29 02:37:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 02:37:01,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:01,614 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] [2023-11-29 02:37:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:37:01,614 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:01,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1860725992, now seen corresponding path program 1 times [2023-11-29 02:37:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:01,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156422096] [2023-11-29 02:37:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:37:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:37:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:37:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:37:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:37:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:37:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:37:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 02:37:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 02:37:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 02:37:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:37:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:37:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:37:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 02:37:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 02:37:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 02:37:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 02:37:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:01,741 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 02:37:01,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156422096] [2023-11-29 02:37:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156422096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:37:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:37:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:37:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394607544] [2023-11-29 02:37:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:37:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:37:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:37:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:37:01,743 INFO L87 Difference]: Start difference. First operand 33171 states and 57503 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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 02:37:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:04,855 INFO L93 Difference]: Finished difference Result 90557 states and 159236 transitions. [2023-11-29 02:37:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:37:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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 150 [2023-11-29 02:37:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:05,014 INFO L225 Difference]: With dead ends: 90557 [2023-11-29 02:37:05,014 INFO L226 Difference]: Without dead ends: 60932 [2023-11-29 02:37:05,061 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 02:37:05,062 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1349 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:05,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 886 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:37:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60932 states. [2023-11-29 02:37:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60932 to 60783. [2023-11-29 02:37:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60783 states, 50514 states have (on average 1.6536405748901295) internal successors, (83532), 50521 states have internal predecessors, (83532), 10241 states have call successors, (10241), 24 states have call predecessors, (10241), 27 states have return successors, (11384), 10237 states have call predecessors, (11384), 10238 states have call successors, (11384) [2023-11-29 02:37:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60783 states to 60783 states and 105157 transitions. [2023-11-29 02:37:07,645 INFO L78 Accepts]: Start accepts. Automaton has 60783 states and 105157 transitions. Word has length 150 [2023-11-29 02:37:07,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:07,646 INFO L495 AbstractCegarLoop]: Abstraction has 60783 states and 105157 transitions. [2023-11-29 02:37:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 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 02:37:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 60783 states and 105157 transitions. [2023-11-29 02:37:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 02:37:07,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:07,685 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 02:37:07,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:37:07,685 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:07,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash 423398298, now seen corresponding path program 1 times [2023-11-29 02:37:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:07,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355015598] [2023-11-29 02:37:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:37:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:37:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:37:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:37:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:37:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:37:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 02:37:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:37:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:37:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 02:37:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:37:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 02:37:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:37:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:37:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:07,782 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 02:37:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355015598] [2023-11-29 02:37:07,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355015598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:37:07,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:37:07,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:37:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789221197] [2023-11-29 02:37:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:37:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:37:07,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:37:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:37:07,784 INFO L87 Difference]: Start difference. First operand 60783 states and 105157 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 02:37:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:12,198 INFO L93 Difference]: Finished difference Result 113909 states and 200846 transitions. [2023-11-29 02:37:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:37:12,199 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 02:37:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:12,512 INFO L225 Difference]: With dead ends: 113909 [2023-11-29 02:37:12,512 INFO L226 Difference]: Without dead ends: 113726 [2023-11-29 02:37:12,544 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 02:37:12,545 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1345 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:12,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 879 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:37:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113726 states. [2023-11-29 02:37:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113726 to 113577. [2023-11-29 02:37:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113577 states, 94940 states have (on average 1.6488729724036233) internal successors, (156544), 94947 states have internal predecessors, (156544), 18609 states have call successors, (18609), 24 states have call predecessors, (18609), 27 states have return successors, (20798), 18605 states have call predecessors, (20798), 18606 states have call successors, (20798) [2023-11-29 02:37:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113577 states to 113577 states and 195951 transitions. [2023-11-29 02:37:16,794 INFO L78 Accepts]: Start accepts. Automaton has 113577 states and 195951 transitions. Word has length 133 [2023-11-29 02:37:16,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:16,795 INFO L495 AbstractCegarLoop]: Abstraction has 113577 states and 195951 transitions. [2023-11-29 02:37:16,795 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 02:37:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 113577 states and 195951 transitions. [2023-11-29 02:37:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 02:37:16,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:16,836 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] [2023-11-29 02:37:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:37:16,837 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1877426825, now seen corresponding path program 1 times [2023-11-29 02:37:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412260634] [2023-11-29 02:37:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:37:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:37:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:37:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:37:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:37:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:37:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:37:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:37:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:37:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:37:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:37:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:37:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:37:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:37:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 02:37:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 02:37:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 02:37:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:17,323 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 02:37:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412260634] [2023-11-29 02:37:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412260634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:37:17,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:37:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:37:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101314044] [2023-11-29 02:37:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:37:17,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:37:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:37:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:37:17,326 INFO L87 Difference]: Start difference. First operand 113577 states and 195951 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 5 states have internal predecessors, (95), 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 02:37:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:25,457 INFO L93 Difference]: Finished difference Result 218795 states and 385280 transitions. [2023-11-29 02:37:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 02:37:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 5 states have internal predecessors, (95), 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 152 [2023-11-29 02:37:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:26,374 INFO L225 Difference]: With dead ends: 218795 [2023-11-29 02:37:26,374 INFO L226 Difference]: Without dead ends: 218619 [2023-11-29 02:37:26,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2023-11-29 02:37:26,436 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2804 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 3560 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 3560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:26,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2821 Valid, 1566 Invalid, 4511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 3560 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:37:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218619 states. [2023-11-29 02:37:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218619 to 218315. [2023-11-29 02:37:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218315 states, 182546 states have (on average 1.6520274341809735) internal successors, (301571), 182499 states have internal predecessors, (301571), 35718 states have call successors, (35718), 46 states have call predecessors, (35718), 50 states have return successors, (38999), 35769 states have call predecessors, (38999), 35714 states have call successors, (38999) [2023-11-29 02:37:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218315 states to 218315 states and 376288 transitions. [2023-11-29 02:37:35,433 INFO L78 Accepts]: Start accepts. Automaton has 218315 states and 376288 transitions. Word has length 152 [2023-11-29 02:37:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:35,433 INFO L495 AbstractCegarLoop]: Abstraction has 218315 states and 376288 transitions. [2023-11-29 02:37:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 5 states have internal predecessors, (95), 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 02:37:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 218315 states and 376288 transitions. [2023-11-29 02:37:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 02:37:35,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:35,508 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 02:37:35,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:37:35,508 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:35,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1288998667, now seen corresponding path program 1 times [2023-11-29 02:37:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:35,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894880857] [2023-11-29 02:37:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:35,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:37:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:37:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:37:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:37:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:37:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:37:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:37:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:37:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:37:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:37:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:37:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 02:37:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:37:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:37:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:35,785 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 02:37:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894880857] [2023-11-29 02:37:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894880857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:37:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:37:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:37:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763369107] [2023-11-29 02:37:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:37:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:37:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:37:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:37:35,787 INFO L87 Difference]: Start difference. First operand 218315 states and 376288 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 5 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 02:37:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:45,143 INFO L93 Difference]: Finished difference Result 220303 states and 385897 transitions. [2023-11-29 02:37:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 02:37:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 5 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 02:37:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:46,244 INFO L225 Difference]: With dead ends: 220303 [2023-11-29 02:37:46,244 INFO L226 Difference]: Without dead ends: 219951 [2023-11-29 02:37:46,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 02:37:46,306 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 2673 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 4777 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 4777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:46,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 1185 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 4777 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:37:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219951 states. [2023-11-29 02:37:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219951 to 219131. [2023-11-29 02:37:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219131 states, 183163 states have (on average 1.6515781025643825) internal successors, (302508), 183128 states have internal predecessors, (302508), 35842 states have call successors, (35842), 112 states have call predecessors, (35842), 125 states have return successors, (39148), 35890 states have call predecessors, (39148), 35830 states have call successors, (39148) [2023-11-29 02:37:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219131 states to 219131 states and 377498 transitions. [2023-11-29 02:37:55,253 INFO L78 Accepts]: Start accepts. Automaton has 219131 states and 377498 transitions. Word has length 134 [2023-11-29 02:37:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:55,254 INFO L495 AbstractCegarLoop]: Abstraction has 219131 states and 377498 transitions. [2023-11-29 02:37:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 5 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 02:37:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 219131 states and 377498 transitions. [2023-11-29 02:37:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 02:37:55,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:55,340 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 02:37:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:37:55,340 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:55,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1605247712, now seen corresponding path program 1 times [2023-11-29 02:37:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663344642] [2023-11-29 02:37:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:37:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:37:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:37:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:37:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:37:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:37:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:37:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:37:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 02:37:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:37:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:37:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 02:37:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 02:37:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 02:37:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:37:55,801 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 02:37:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:37:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663344642] [2023-11-29 02:37:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663344642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:37:55,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:37:55,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 02:37:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647821989] [2023-11-29 02:37:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:37:55,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:37:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:37:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:37:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:37:55,804 INFO L87 Difference]: Start difference. First operand 219131 states and 377498 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 02:38:05,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:05,968 INFO L93 Difference]: Finished difference Result 221873 states and 388375 transitions. [2023-11-29 02:38:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 02:38:05,969 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 02:38:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:06,783 INFO L225 Difference]: With dead ends: 221873 [2023-11-29 02:38:06,783 INFO L226 Difference]: Without dead ends: 220657 [2023-11-29 02:38:06,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=381, Invalid=1875, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 02:38:06,839 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1860 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 7224 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 8120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 7224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:06,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 2320 Invalid, 8120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 7224 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:38:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220657 states. [2023-11-29 02:38:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220657 to 219445. [2023-11-29 02:38:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219445 states, 183377 states have (on average 1.6512866935329948) internal successors, (302808), 183351 states have internal predecessors, (302808), 35936 states have call successors, (35936), 118 states have call predecessors, (35936), 131 states have return successors, (39251), 35975 states have call predecessors, (39251), 35918 states have call successors, (39251) [2023-11-29 02:38:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219445 states to 219445 states and 377995 transitions. [2023-11-29 02:38:15,623 INFO L78 Accepts]: Start accepts. Automaton has 219445 states and 377995 transitions. Word has length 135 [2023-11-29 02:38:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:15,624 INFO L495 AbstractCegarLoop]: Abstraction has 219445 states and 377995 transitions. [2023-11-29 02:38:15,624 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 02:38:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 219445 states and 377995 transitions. [2023-11-29 02:38:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 02:38:16,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:16,209 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 02:38:16,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:38:16,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:16,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1611621419, now seen corresponding path program 1 times [2023-11-29 02:38:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:16,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593809779] [2023-11-29 02:38:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:38:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:38:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:38:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:38:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:38:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:38:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:38:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:38:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:38:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:38:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:38:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 02:38:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:38:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:16,845 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 02:38:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593809779] [2023-11-29 02:38:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593809779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:38:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053889390] [2023-11-29 02:38:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:16,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:38:16,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:38:16,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:38:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:17,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:38:17,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:38:17,437 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 02:38:17,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:38:17,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053889390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:17,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:38:17,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2023-11-29 02:38:17,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624768239] [2023-11-29 02:38:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:17,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:38:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:38:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:38:17,439 INFO L87 Difference]: Start difference. First operand 219445 states and 377995 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 02:38:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:24,602 INFO L93 Difference]: Finished difference Result 221879 states and 381736 transitions. [2023-11-29 02:38:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:38:24,603 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 02:38:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:25,516 INFO L225 Difference]: With dead ends: 221879 [2023-11-29 02:38:25,517 INFO L226 Difference]: Without dead ends: 221097 [2023-11-29 02:38:25,580 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 02:38:25,581 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 929 mSDsluCounter, 5227 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 5806 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:25,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 5806 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:38:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221097 states. [2023-11-29 02:38:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221097 to 220999. [2023-11-29 02:38:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220999 states, 184514 states have (on average 1.6502596008974928) internal successors, (304496), 184526 states have internal predecessors, (304496), 36226 states have call successors, (36226), 218 states have call predecessors, (36226), 258 states have return successors, (39688), 36254 states have call predecessors, (39688), 36192 states have call successors, (39688) [2023-11-29 02:38:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220999 states to 220999 states and 380410 transitions. [2023-11-29 02:38:35,272 INFO L78 Accepts]: Start accepts. Automaton has 220999 states and 380410 transitions. Word has length 138 [2023-11-29 02:38:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 220999 states and 380410 transitions. [2023-11-29 02:38:35,273 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 02:38:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 220999 states and 380410 transitions. [2023-11-29 02:38:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 02:38:35,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:35,772 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 02:38:35,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:38:35,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:35,973 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 529454696, now seen corresponding path program 1 times [2023-11-29 02:38:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208388232] [2023-11-29 02:38:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:38:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:38:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:38:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:38:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:38:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:38:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:38:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:38:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:38:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:38:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:38:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 02:38:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:38:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,355 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 02:38:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:36,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208388232] [2023-11-29 02:38:36,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208388232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 02:38:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744531200] [2023-11-29 02:38:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 02:38:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 02:38:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:38:36,357 INFO L87 Difference]: Start difference. First operand 220999 states and 380410 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 02:38:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:49,520 INFO L93 Difference]: Finished difference Result 225191 states and 393909 transitions. [2023-11-29 02:38:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 02:38:49,521 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 02:38:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:50,179 INFO L225 Difference]: With dead ends: 225191 [2023-11-29 02:38:50,180 INFO L226 Difference]: Without dead ends: 223581 [2023-11-29 02:38:50,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 02:38:50,390 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 2829 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 8546 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 9463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 8546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 2211 Invalid, 9463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [917 Valid, 8546 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 02:38:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223581 states. [2023-11-29 02:38:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223581 to 221229. [2023-11-29 02:38:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221229 states, 184658 states have (on average 1.6499691321253345) internal successors, (304680), 184676 states have internal predecessors, (304680), 36292 states have call successors, (36292), 218 states have call predecessors, (36292), 278 states have return successors, (39840), 36334 states have call predecessors, (39840), 36258 states have call successors, (39840) [2023-11-29 02:39:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221229 states to 221229 states and 380812 transitions. [2023-11-29 02:39:00,187 INFO L78 Accepts]: Start accepts. Automaton has 221229 states and 380812 transitions. Word has length 139 [2023-11-29 02:39:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:00,187 INFO L495 AbstractCegarLoop]: Abstraction has 221229 states and 380812 transitions. [2023-11-29 02:39:00,187 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 02:39:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 221229 states and 380812 transitions. [2023-11-29 02:39:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 02:39:00,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:00,249 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 02:39:00,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:39:00,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1066133505, now seen corresponding path program 1 times [2023-11-29 02:39:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622584991] [2023-11-29 02:39:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:39:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:39:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:39:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:39:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:39:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:39:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:39:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:39:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:39:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:39:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:39:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 02:39:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:39:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:00,784 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 02:39:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622584991] [2023-11-29 02:39:00,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622584991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:39:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630896000] [2023-11-29 02:39:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:00,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:39:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:39:00,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:39:00,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:39:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:01,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:39:01,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:39:01,680 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 02:39:01,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:39:02,800 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 02:39:02,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630896000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:39:02,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:39:02,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 53 [2023-11-29 02:39:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641912644] [2023-11-29 02:39:02,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:39:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 02:39:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 02:39:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2585, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 02:39:02,804 INFO L87 Difference]: Start difference. First operand 221229 states and 380812 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) [2023-11-29 02:39:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:51,487 INFO L93 Difference]: Finished difference Result 682388 states and 1215953 transitions. [2023-11-29 02:39:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-29 02:39:51,488 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 139 [2023-11-29 02:39:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:54,884 INFO L225 Difference]: With dead ends: 682388 [2023-11-29 02:39:54,884 INFO L226 Difference]: Without dead ends: 680644 [2023-11-29 02:39:55,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3974 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2065, Invalid=13187, Unknown=0, NotChecked=0, Total=15252 [2023-11-29 02:39:55,291 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 7831 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 36603 mSolverCounterSat, 2939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7831 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 39542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2939 IncrementalHoareTripleChecker+Valid, 36603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:55,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7831 Valid, 6470 Invalid, 39542 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2939 Valid, 36603 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-11-29 02:39:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680644 states. [2023-11-29 02:40:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680644 to 667880. [2023-11-29 02:40:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667880 states, 556756 states have (on average 1.6484779688050062) internal successors, (917800), 556834 states have internal predecessors, (917800), 109921 states have call successors, (109921), 832 states have call predecessors, (109921), 1202 states have return successors, (140526), 110213 states have call predecessors, (140526), 109791 states have call successors, (140526) [2023-11-29 02:40:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667880 states to 667880 states and 1168247 transitions. [2023-11-29 02:40:37,291 INFO L78 Accepts]: Start accepts. Automaton has 667880 states and 1168247 transitions. Word has length 139 [2023-11-29 02:40:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:37,291 INFO L495 AbstractCegarLoop]: Abstraction has 667880 states and 1168247 transitions. [2023-11-29 02:40:37,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-29 02:40:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 667880 states and 1168247 transitions. [2023-11-29 02:40:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 02:40:37,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:37,531 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 02:40:37,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:40:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92bf30d-ca65-49e6-ad4a-9b652e2ab1ec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 02:40:37,732 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1526189037, now seen corresponding path program 1 times [2023-11-29 02:40:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968426346] [2023-11-29 02:40:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:40:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:40:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:40:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:40:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:40:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:40:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 02:40:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 02:40:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 02:40:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:40:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:40:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 02:40:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:40:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 02:40:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:37,987 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 02:40:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968426346] [2023-11-29 02:40:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968426346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:37,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 02:40:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140487240] [2023-11-29 02:40:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:40:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:40:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:40:37,990 INFO L87 Difference]: Start difference. First operand 667880 states and 1168247 transitions. Second operand has 16 states, 15 states have (on average 6.266666666666667) internal successors, (94), 10 states have internal predecessors, (94), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)