./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/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 c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:08:08,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:08:08,763 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:08:08,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:08:08,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:08:08,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:08:08,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:08:08,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:08:08,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:08:08,796 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:08:08,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:08:08,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:08:08,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:08:08,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:08:08,799 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:08:08,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:08:08,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:08:08,800 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:08:08,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:08:08,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:08:08,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:08:08,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:08:08,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:08:08,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:08:08,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:08:08,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:08:08,807 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:08:08,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:08:08,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:08:08,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:08:08,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:08:08,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:08:08,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:08:08,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:08:08,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:08:08,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:08:08,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:08:08,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:08:08,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:08:08,811 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:08:08,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:08:08,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:08:08,811 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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be [2023-11-29 02:08:09,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:08:09,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:08:09,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:08:09,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:08:09,072 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:08:09,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2023-11-29 02:08:11,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:08:12,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:08:12,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2023-11-29 02:08:12,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/data/101538393/6be9b234ce7f4dcb99e92af3fb2e0d6c/FLAGfae760d46 [2023-11-29 02:08:12,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/data/101538393/6be9b234ce7f4dcb99e92af3fb2e0d6c [2023-11-29 02:08:12,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:08:12,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:08:12,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:08:12,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:08:12,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:08:12,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1217b43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12, skipping insertion in model container [2023-11-29 02:08:12,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:08:12,427 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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c[913,926] [2023-11-29 02:08:12,476 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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c[5977,5990] [2023-11-29 02:08:12,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:08:12,552 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:08:12,563 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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c[913,926] [2023-11-29 02:08:12,585 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_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c[5977,5990] [2023-11-29 02:08:12,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:08:12,649 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:08:12,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12 WrapperNode [2023-11-29 02:08:12,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:08:12,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:08:12,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:08:12,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:08:12,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,722 INFO L138 Inliner]: procedures = 56, calls = 61, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 611 [2023-11-29 02:08:12,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:08:12,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:08:12,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:08:12,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:08:12,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,758 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:08:12,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:08:12,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:08:12,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:08:12,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:08:12,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (1/1) ... [2023-11-29 02:08:12,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:08:12,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:12,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:08:12,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:08:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:08:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:08:12,875 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:08:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-29 02:08:12,876 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-29 02:08:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-29 02:08:12,876 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-29 02:08:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-29 02:08:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-29 02:08:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-29 02:08:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-29 02:08:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-29 02:08:12,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-29 02:08:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-29 02:08:12,878 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-29 02:08:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:08:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-29 02:08:12,878 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-29 02:08:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:08:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:08:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-29 02:08:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-29 02:08:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-29 02:08:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-29 02:08:12,994 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:08:12,997 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:08:13,596 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:08:13,658 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:08:13,658 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 02:08:13,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:08:13 BoogieIcfgContainer [2023-11-29 02:08:13,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:08:13,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:08:13,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:08:13,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:08:13,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:08:12" (1/3) ... [2023-11-29 02:08:13,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657f033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:08:13, skipping insertion in model container [2023-11-29 02:08:13,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:08:12" (2/3) ... [2023-11-29 02:08:13,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657f033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:08:13, skipping insertion in model container [2023-11-29 02:08:13,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:08:13" (3/3) ... [2023-11-29 02:08:13,669 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2023-11-29 02:08:13,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:08:13,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:08:13,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:08:13,752 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;@549e613e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:08:13,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:08:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 203 states have internal predecessors, (331), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 02:08:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 02:08:13,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:13,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:13,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:13,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1217203649, now seen corresponding path program 1 times [2023-11-29 02:08:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023775635] [2023-11-29 02:08:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:14,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:14,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023775635] [2023-11-29 02:08:14,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023775635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:14,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:08:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796704811] [2023-11-29 02:08:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:14,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:08:14,123 INFO L87 Difference]: Start difference. First operand has 235 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 203 states have internal predecessors, (331), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:14,712 INFO L93 Difference]: Finished difference Result 518 states and 846 transitions. [2023-11-29 02:08:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:08:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-11-29 02:08:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:14,730 INFO L225 Difference]: With dead ends: 518 [2023-11-29 02:08:14,731 INFO L226 Difference]: Without dead ends: 292 [2023-11-29 02:08:14,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:14,740 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 443 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:14,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 453 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:08:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-29 02:08:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 286. [2023-11-29 02:08:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 243 states have (on average 1.5308641975308641) internal successors, (372), 248 states have internal predecessors, (372), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-11-29 02:08:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 434 transitions. [2023-11-29 02:08:14,821 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 434 transitions. Word has length 37 [2023-11-29 02:08:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:14,822 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 434 transitions. [2023-11-29 02:08:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 434 transitions. [2023-11-29 02:08:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 02:08:14,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:14,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:08:14,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:14,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1404925790, now seen corresponding path program 1 times [2023-11-29 02:08:14,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:14,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798604631] [2023-11-29 02:08:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:08:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798604631] [2023-11-29 02:08:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798604631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:14,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:08:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607471570] [2023-11-29 02:08:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:08:14,932 INFO L87 Difference]: Start difference. First operand 286 states and 434 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:15,340 INFO L93 Difference]: Finished difference Result 520 states and 778 transitions. [2023-11-29 02:08:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:08:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-29 02:08:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:15,346 INFO L225 Difference]: With dead ends: 520 [2023-11-29 02:08:15,346 INFO L226 Difference]: Without dead ends: 409 [2023-11-29 02:08:15,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:15,349 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 456 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:15,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 445 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:08:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-29 02:08:15,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2023-11-29 02:08:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 330 states have (on average 1.4848484848484849) internal successors, (490), 336 states have internal predecessors, (490), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (46), 34 states have call predecessors, (46), 34 states have call successors, (46) [2023-11-29 02:08:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 574 transitions. [2023-11-29 02:08:15,393 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 574 transitions. Word has length 38 [2023-11-29 02:08:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:15,393 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 574 transitions. [2023-11-29 02:08:15,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 574 transitions. [2023-11-29 02:08:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 02:08:15,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:15,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:08:15,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:15,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1083038728, now seen corresponding path program 1 times [2023-11-29 02:08:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:15,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276475221] [2023-11-29 02:08:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:08:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:15,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:15,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276475221] [2023-11-29 02:08:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276475221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:15,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:15,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:08:15,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491401395] [2023-11-29 02:08:15,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:08:15,469 INFO L87 Difference]: Start difference. First operand 386 states and 574 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:15,864 INFO L93 Difference]: Finished difference Result 806 states and 1155 transitions. [2023-11-29 02:08:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:08:15,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-11-29 02:08:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:15,871 INFO L225 Difference]: With dead ends: 806 [2023-11-29 02:08:15,871 INFO L226 Difference]: Without dead ends: 595 [2023-11-29 02:08:15,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:15,874 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 195 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:15,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 610 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:08:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-11-29 02:08:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 491. [2023-11-29 02:08:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 423 states have (on average 1.4633569739952719) internal successors, (619), 431 states have internal predecessors, (619), 44 states have call successors, (44), 22 states have call predecessors, (44), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2023-11-29 02:08:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 715 transitions. [2023-11-29 02:08:15,929 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 715 transitions. Word has length 39 [2023-11-29 02:08:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:15,929 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 715 transitions. [2023-11-29 02:08:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:08:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 715 transitions. [2023-11-29 02:08:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 02:08:15,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:15,933 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:08:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:08:15,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:15,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -365158752, now seen corresponding path program 1 times [2023-11-29 02:08:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127921652] [2023-11-29 02:08:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 02:08:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:08:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:08:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127921652] [2023-11-29 02:08:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127921652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:16,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:16,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:08:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273056288] [2023-11-29 02:08:16,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:16,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:08:16,038 INFO L87 Difference]: Start difference. First operand 491 states and 715 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:08:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:16,436 INFO L93 Difference]: Finished difference Result 1007 states and 1432 transitions. [2023-11-29 02:08:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:08:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-11-29 02:08:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:16,442 INFO L225 Difference]: With dead ends: 1007 [2023-11-29 02:08:16,442 INFO L226 Difference]: Without dead ends: 691 [2023-11-29 02:08:16,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:16,444 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 180 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:16,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 657 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:08:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-29 02:08:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 657. [2023-11-29 02:08:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 565 states have (on average 1.407079646017699) internal successors, (795), 575 states have internal predecessors, (795), 58 states have call successors, (58), 30 states have call predecessors, (58), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2023-11-29 02:08:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 929 transitions. [2023-11-29 02:08:16,486 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 929 transitions. Word has length 54 [2023-11-29 02:08:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:16,486 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 929 transitions. [2023-11-29 02:08:16,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:08:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 929 transitions. [2023-11-29 02:08:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 02:08:16,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:16,489 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:08:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:08:16,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1923672539, now seen corresponding path program 1 times [2023-11-29 02:08:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275422298] [2023-11-29 02:08:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 02:08:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:08:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 02:08:16,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:16,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275422298] [2023-11-29 02:08:16,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275422298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:16,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:16,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:08:16,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477277444] [2023-11-29 02:08:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:16,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:08:16,560 INFO L87 Difference]: Start difference. First operand 657 states and 929 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:08:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:16,898 INFO L93 Difference]: Finished difference Result 1236 states and 1708 transitions. [2023-11-29 02:08:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:08:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-11-29 02:08:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:16,906 INFO L225 Difference]: With dead ends: 1236 [2023-11-29 02:08:16,906 INFO L226 Difference]: Without dead ends: 834 [2023-11-29 02:08:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:16,908 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 442 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:16,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 457 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:08:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-11-29 02:08:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 785. [2023-11-29 02:08:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 677 states have (on average 1.3737075332348596) internal successors, (930), 689 states have internal predecessors, (930), 66 states have call successors, (66), 36 states have call predecessors, (66), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2023-11-29 02:08:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1086 transitions. [2023-11-29 02:08:16,982 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1086 transitions. Word has length 59 [2023-11-29 02:08:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:16,982 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1086 transitions. [2023-11-29 02:08:16,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:08:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1086 transitions. [2023-11-29 02:08:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 02:08:16,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:16,985 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:08:16,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:08:16,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:16,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash -469151263, now seen corresponding path program 1 times [2023-11-29 02:08:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316967593] [2023-11-29 02:08:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:08:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:08:17,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316967593] [2023-11-29 02:08:17,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316967593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:17,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057574871] [2023-11-29 02:08:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:17,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:17,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:17,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:17,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:08:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:08:17,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:08:17,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057574871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 02:08:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51668889] [2023-11-29 02:08:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:17,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:17,252 INFO L87 Difference]: Start difference. First operand 785 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:08:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:17,354 INFO L93 Difference]: Finished difference Result 1266 states and 1747 transitions. [2023-11-29 02:08:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-11-29 02:08:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:17,359 INFO L225 Difference]: With dead ends: 1266 [2023-11-29 02:08:17,359 INFO L226 Difference]: Without dead ends: 783 [2023-11-29 02:08:17,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:17,362 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 66 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:17,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 663 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:08:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-29 02:08:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 745. [2023-11-29 02:08:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 643 states have (on average 1.3545878693623639) internal successors, (871), 655 states have internal predecessors, (871), 62 states have call successors, (62), 34 states have call predecessors, (62), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2023-11-29 02:08:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1017 transitions. [2023-11-29 02:08:17,405 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1017 transitions. Word has length 60 [2023-11-29 02:08:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:17,405 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1017 transitions. [2023-11-29 02:08:17,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:08:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1017 transitions. [2023-11-29 02:08:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 02:08:17,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:17,408 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:08:17,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:08:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:17,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 601272416, now seen corresponding path program 1 times [2023-11-29 02:08:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349333281] [2023-11-29 02:08:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:08:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:08:17,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349333281] [2023-11-29 02:08:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349333281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112789219] [2023-11-29 02:08:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:17,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:17,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:17,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:08:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:17,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:08:17,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:17,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 02:08:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112789219] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:08:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-11-29 02:08:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002948416] [2023-11-29 02:08:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:17,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:08:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:08:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:17,986 INFO L87 Difference]: Start difference. First operand 745 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:08:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:18,199 INFO L93 Difference]: Finished difference Result 791 states and 1073 transitions. [2023-11-29 02:08:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:08:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-11-29 02:08:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:18,206 INFO L225 Difference]: With dead ends: 791 [2023-11-29 02:08:18,206 INFO L226 Difference]: Without dead ends: 788 [2023-11-29 02:08:18,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:08:18,208 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 606 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:18,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 391 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:08:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-11-29 02:08:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 744. [2023-11-29 02:08:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 643 states have (on average 1.3514774494556765) internal successors, (869), 654 states have internal predecessors, (869), 61 states have call successors, (61), 34 states have call predecessors, (61), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2023-11-29 02:08:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1014 transitions. [2023-11-29 02:08:18,269 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1014 transitions. Word has length 60 [2023-11-29 02:08:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:18,269 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1014 transitions. [2023-11-29 02:08:18,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:08:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1014 transitions. [2023-11-29 02:08:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 02:08:18,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:18,272 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:08:18,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:08:18,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:18,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:18,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1458737000, now seen corresponding path program 1 times [2023-11-29 02:08:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114483838] [2023-11-29 02:08:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:08:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:08:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114483838] [2023-11-29 02:08:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114483838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634533537] [2023-11-29 02:08:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:18,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:18,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:18,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:18,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:08:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:18,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:08:18,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:18,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 02:08:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634533537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:08:19,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:08:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-11-29 02:08:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222447993] [2023-11-29 02:08:19,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:08:19,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:19,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:08:19,060 INFO L87 Difference]: Start difference. First operand 744 states and 1014 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 02:08:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:20,161 INFO L93 Difference]: Finished difference Result 1919 states and 2580 transitions. [2023-11-29 02:08:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 02:08:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-11-29 02:08:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:20,172 INFO L225 Difference]: With dead ends: 1919 [2023-11-29 02:08:20,172 INFO L226 Difference]: Without dead ends: 1479 [2023-11-29 02:08:20,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:08:20,176 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 681 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:20,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1595 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:08:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2023-11-29 02:08:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1070. [2023-11-29 02:08:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 930 states have (on average 1.3204301075268816) internal successors, (1228), 949 states have internal predecessors, (1228), 81 states have call successors, (81), 48 states have call predecessors, (81), 57 states have return successors, (118), 73 states have call predecessors, (118), 78 states have call successors, (118) [2023-11-29 02:08:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1427 transitions. [2023-11-29 02:08:20,270 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1427 transitions. Word has length 61 [2023-11-29 02:08:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:20,270 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1427 transitions. [2023-11-29 02:08:20,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 02:08:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1427 transitions. [2023-11-29 02:08:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 02:08:20,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:20,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 02:08:20,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:08:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:08:20,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:20,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1777456488, now seen corresponding path program 1 times [2023-11-29 02:08:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:20,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733198560] [2023-11-29 02:08:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:08:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:08:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 02:08:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733198560] [2023-11-29 02:08:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733198560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806444531] [2023-11-29 02:08:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:20,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:20,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:08:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:20,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:08:20,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 02:08:20,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:20,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806444531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:20,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 02:08:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307195526] [2023-11-29 02:08:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:20,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:20,766 INFO L87 Difference]: Start difference. First operand 1070 states and 1427 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 02:08:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:20,886 INFO L93 Difference]: Finished difference Result 1672 states and 2213 transitions. [2023-11-29 02:08:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-11-29 02:08:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:20,893 INFO L225 Difference]: With dead ends: 1672 [2023-11-29 02:08:20,893 INFO L226 Difference]: Without dead ends: 1000 [2023-11-29 02:08:20,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:20,896 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 311 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:20,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 409 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:08:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-11-29 02:08:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 991. [2023-11-29 02:08:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 861 states have (on average 1.3147502903600465) internal successors, (1132), 879 states have internal predecessors, (1132), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2023-11-29 02:08:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1319 transitions. [2023-11-29 02:08:20,976 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1319 transitions. Word has length 78 [2023-11-29 02:08:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:20,976 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1319 transitions. [2023-11-29 02:08:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 02:08:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1319 transitions. [2023-11-29 02:08:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:20,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:20,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:20,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:08:21,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:08:21,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:21,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1834725124, now seen corresponding path program 1 times [2023-11-29 02:08:21,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:21,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016911059] [2023-11-29 02:08:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:21,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016911059] [2023-11-29 02:08:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016911059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:21,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:21,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:08:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97517940] [2023-11-29 02:08:21,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:21,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:08:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:08:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:08:21,295 INFO L87 Difference]: Start difference. First operand 991 states and 1319 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:22,208 INFO L93 Difference]: Finished difference Result 1202 states and 1658 transitions. [2023-11-29 02:08:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:08:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:22,215 INFO L225 Difference]: With dead ends: 1202 [2023-11-29 02:08:22,215 INFO L226 Difference]: Without dead ends: 1041 [2023-11-29 02:08:22,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:08:22,217 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 475 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:22,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 509 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:08:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-11-29 02:08:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 991. [2023-11-29 02:08:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 861 states have (on average 1.3135888501742161) internal successors, (1131), 879 states have internal predecessors, (1131), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2023-11-29 02:08:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1318 transitions. [2023-11-29 02:08:22,310 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1318 transitions. Word has length 82 [2023-11-29 02:08:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:22,310 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1318 transitions. [2023-11-29 02:08:22,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1318 transitions. [2023-11-29 02:08:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:22,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:22,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:22,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:08:22,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1911625922, now seen corresponding path program 1 times [2023-11-29 02:08:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325813156] [2023-11-29 02:08:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325813156] [2023-11-29 02:08:22,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325813156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:22,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:22,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:08:22,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110298481] [2023-11-29 02:08:22,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:22,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:08:22,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:08:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:22,461 INFO L87 Difference]: Start difference. First operand 991 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:23,846 INFO L93 Difference]: Finished difference Result 1412 states and 1996 transitions. [2023-11-29 02:08:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:08:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:23,854 INFO L225 Difference]: With dead ends: 1412 [2023-11-29 02:08:23,854 INFO L226 Difference]: Without dead ends: 1253 [2023-11-29 02:08:23,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:08:23,856 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 757 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:23,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 717 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:08:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-11-29 02:08:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1152. [2023-11-29 02:08:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1002 states have (on average 1.3542914171656686) internal successors, (1357), 1021 states have internal predecessors, (1357), 90 states have call successors, (90), 50 states have call predecessors, (90), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2023-11-29 02:08:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1573 transitions. [2023-11-29 02:08:23,962 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1573 transitions. Word has length 82 [2023-11-29 02:08:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:23,963 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1573 transitions. [2023-11-29 02:08:23,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1573 transitions. [2023-11-29 02:08:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:23,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:23,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:08:23,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:23,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1890715200, now seen corresponding path program 1 times [2023-11-29 02:08:23,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039840636] [2023-11-29 02:08:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039840636] [2023-11-29 02:08:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039840636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:24,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729603736] [2023-11-29 02:08:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:24,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:24,150 INFO L87 Difference]: Start difference. First operand 1152 states and 1573 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:25,995 INFO L93 Difference]: Finished difference Result 1789 states and 2596 transitions. [2023-11-29 02:08:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:08:25,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:26,004 INFO L225 Difference]: With dead ends: 1789 [2023-11-29 02:08:26,004 INFO L226 Difference]: Without dead ends: 1469 [2023-11-29 02:08:26,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:08:26,007 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 766 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:26,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1241 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:08:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-11-29 02:08:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1303. [2023-11-29 02:08:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.379523389232127) internal successors, (1563), 1153 states have internal predecessors, (1563), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-11-29 02:08:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1807 transitions. [2023-11-29 02:08:26,134 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1807 transitions. Word has length 82 [2023-11-29 02:08:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:26,134 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1807 transitions. [2023-11-29 02:08:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1807 transitions. [2023-11-29 02:08:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:26,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:26,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:26,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:08:26,139 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:26,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 674561474, now seen corresponding path program 1 times [2023-11-29 02:08:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971174058] [2023-11-29 02:08:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971174058] [2023-11-29 02:08:26,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971174058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:26,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:26,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:26,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502301818] [2023-11-29 02:08:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:26,297 INFO L87 Difference]: Start difference. First operand 1303 states and 1807 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:27,234 INFO L93 Difference]: Finished difference Result 1940 states and 2836 transitions. [2023-11-29 02:08:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:08:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:27,243 INFO L225 Difference]: With dead ends: 1940 [2023-11-29 02:08:27,244 INFO L226 Difference]: Without dead ends: 1469 [2023-11-29 02:08:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:08:27,247 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 598 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:27,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 727 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:08:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-11-29 02:08:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1303. [2023-11-29 02:08:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.3768755516328333) internal successors, (1560), 1153 states have internal predecessors, (1560), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-11-29 02:08:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1804 transitions. [2023-11-29 02:08:27,401 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1804 transitions. Word has length 82 [2023-11-29 02:08:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:27,402 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1804 transitions. [2023-11-29 02:08:27,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1804 transitions. [2023-11-29 02:08:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:27,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:27,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:27,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:08:27,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:27,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash -57405952, now seen corresponding path program 1 times [2023-11-29 02:08:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901918536] [2023-11-29 02:08:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:27,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901918536] [2023-11-29 02:08:27,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901918536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:27,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087664860] [2023-11-29 02:08:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:27,563 INFO L87 Difference]: Start difference. First operand 1303 states and 1804 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:28,399 INFO L93 Difference]: Finished difference Result 1936 states and 2819 transitions. [2023-11-29 02:08:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:08:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:28,406 INFO L225 Difference]: With dead ends: 1936 [2023-11-29 02:08:28,406 INFO L226 Difference]: Without dead ends: 1465 [2023-11-29 02:08:28,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:08:28,408 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 596 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:28,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 727 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:08:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-11-29 02:08:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1303. [2023-11-29 02:08:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.3742277140335393) internal successors, (1557), 1153 states have internal predecessors, (1557), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-11-29 02:08:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1801 transitions. [2023-11-29 02:08:28,493 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1801 transitions. Word has length 82 [2023-11-29 02:08:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:28,493 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1801 transitions. [2023-11-29 02:08:28,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1801 transitions. [2023-11-29 02:08:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:28,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:28,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:28,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:08:28,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:28,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1743585790, now seen corresponding path program 1 times [2023-11-29 02:08:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742521686] [2023-11-29 02:08:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:28,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742521686] [2023-11-29 02:08:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742521686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616129761] [2023-11-29 02:08:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:28,676 INFO L87 Difference]: Start difference. First operand 1303 states and 1801 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:30,303 INFO L93 Difference]: Finished difference Result 2443 states and 3598 transitions. [2023-11-29 02:08:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:08:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:30,314 INFO L225 Difference]: With dead ends: 2443 [2023-11-29 02:08:30,314 INFO L226 Difference]: Without dead ends: 1972 [2023-11-29 02:08:30,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:08:30,317 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 901 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:30,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1232 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:08:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-11-29 02:08:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1610. [2023-11-29 02:08:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1402 states have (on average 1.4094151212553494) internal successors, (1976), 1424 states have internal predecessors, (1976), 127 states have call successors, (127), 68 states have call predecessors, (127), 79 states have return successors, (173), 121 states have call predecessors, (173), 124 states have call successors, (173) [2023-11-29 02:08:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2276 transitions. [2023-11-29 02:08:30,494 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2276 transitions. Word has length 82 [2023-11-29 02:08:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:30,494 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2276 transitions. [2023-11-29 02:08:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2276 transitions. [2023-11-29 02:08:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:30,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:30,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:08:30,499 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:30,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1797978688, now seen corresponding path program 1 times [2023-11-29 02:08:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646540581] [2023-11-29 02:08:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646540581] [2023-11-29 02:08:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646540581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788593957] [2023-11-29 02:08:30,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:30,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:30,656 INFO L87 Difference]: Start difference. First operand 1610 states and 2276 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:32,248 INFO L93 Difference]: Finished difference Result 3568 states and 5351 transitions. [2023-11-29 02:08:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:08:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:32,260 INFO L225 Difference]: With dead ends: 3568 [2023-11-29 02:08:32,260 INFO L226 Difference]: Without dead ends: 2790 [2023-11-29 02:08:32,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:08:32,263 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 774 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:32,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1228 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:08:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2023-11-29 02:08:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2179. [2023-11-29 02:08:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1897 states have (on average 1.4422772799156562) internal successors, (2736), 1923 states have internal predecessors, (2736), 173 states have call successors, (173), 92 states have call predecessors, (173), 107 states have return successors, (241), 171 states have call predecessors, (241), 170 states have call successors, (241) [2023-11-29 02:08:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3150 transitions. [2023-11-29 02:08:32,500 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3150 transitions. Word has length 82 [2023-11-29 02:08:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:32,501 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3150 transitions. [2023-11-29 02:08:32,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3150 transitions. [2023-11-29 02:08:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:32,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:32,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:32,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:08:32,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:32,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2079592002, now seen corresponding path program 1 times [2023-11-29 02:08:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615380630] [2023-11-29 02:08:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615380630] [2023-11-29 02:08:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615380630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8126562] [2023-11-29 02:08:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:32,665 INFO L87 Difference]: Start difference. First operand 2179 states and 3150 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:33,543 INFO L93 Difference]: Finished difference Result 3900 states and 5864 transitions. [2023-11-29 02:08:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:08:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:33,556 INFO L225 Difference]: With dead ends: 3900 [2023-11-29 02:08:33,556 INFO L226 Difference]: Without dead ends: 2553 [2023-11-29 02:08:33,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:08:33,561 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 685 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:33,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 599 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:08:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2023-11-29 02:08:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2179. [2023-11-29 02:08:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1897 states have (on average 1.437532946758039) internal successors, (2727), 1923 states have internal predecessors, (2727), 173 states have call successors, (173), 92 states have call predecessors, (173), 107 states have return successors, (241), 171 states have call predecessors, (241), 170 states have call successors, (241) [2023-11-29 02:08:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3141 transitions. [2023-11-29 02:08:33,791 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3141 transitions. Word has length 82 [2023-11-29 02:08:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:33,791 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3141 transitions. [2023-11-29 02:08:33,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3141 transitions. [2023-11-29 02:08:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:33,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:33,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:33,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:08:33,797 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:33,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1536103040, now seen corresponding path program 1 times [2023-11-29 02:08:33,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:33,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133865348] [2023-11-29 02:08:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133865348] [2023-11-29 02:08:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133865348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:33,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:33,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:08:33,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985713327] [2023-11-29 02:08:33,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:33,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:08:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:08:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:33,991 INFO L87 Difference]: Start difference. First operand 2179 states and 3141 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:35,552 INFO L93 Difference]: Finished difference Result 5533 states and 8347 transitions. [2023-11-29 02:08:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:08:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:35,569 INFO L225 Difference]: With dead ends: 5533 [2023-11-29 02:08:35,570 INFO L226 Difference]: Without dead ends: 4186 [2023-11-29 02:08:35,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:08:35,576 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 783 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:35,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 867 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:08:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2023-11-29 02:08:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3365. [2023-11-29 02:08:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2939 states have (on average 1.4722694794147668) internal successors, (4327), 2973 states have internal predecessors, (4327), 261 states have call successors, (261), 140 states have call predecessors, (261), 163 states have return successors, (391), 267 states have call predecessors, (391), 258 states have call successors, (391) [2023-11-29 02:08:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4979 transitions. [2023-11-29 02:08:35,862 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4979 transitions. Word has length 82 [2023-11-29 02:08:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:35,862 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4979 transitions. [2023-11-29 02:08:35,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4979 transitions. [2023-11-29 02:08:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 02:08:35,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:35,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:35,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:08:35,869 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:35,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash 425471618, now seen corresponding path program 1 times [2023-11-29 02:08:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829798185] [2023-11-29 02:08:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:08:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829798185] [2023-11-29 02:08:35,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829798185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:35,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:35,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:08:35,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857719237] [2023-11-29 02:08:35,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:35,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:08:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:08:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:35,990 INFO L87 Difference]: Start difference. First operand 3365 states and 4979 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:37,644 INFO L93 Difference]: Finished difference Result 8107 states and 12374 transitions. [2023-11-29 02:08:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:08:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-11-29 02:08:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:37,667 INFO L225 Difference]: With dead ends: 8107 [2023-11-29 02:08:37,667 INFO L226 Difference]: Without dead ends: 5575 [2023-11-29 02:08:37,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:08:37,677 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 926 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:37,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 912 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:08:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2023-11-29 02:08:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 4658. [2023-11-29 02:08:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4658 states, 4060 states have (on average 1.480295566502463) internal successors, (6010), 4111 states have internal predecessors, (6010), 371 states have call successors, (371), 194 states have call predecessors, (371), 225 states have return successors, (529), 368 states have call predecessors, (529), 368 states have call successors, (529) [2023-11-29 02:08:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4658 states to 4658 states and 6910 transitions. [2023-11-29 02:08:38,070 INFO L78 Accepts]: Start accepts. Automaton has 4658 states and 6910 transitions. Word has length 82 [2023-11-29 02:08:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:38,070 INFO L495 AbstractCegarLoop]: Abstraction has 4658 states and 6910 transitions. [2023-11-29 02:08:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:08:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4658 states and 6910 transitions. [2023-11-29 02:08:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 02:08:38,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:38,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:08:38,080 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash -865278085, now seen corresponding path program 1 times [2023-11-29 02:08:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732462551] [2023-11-29 02:08:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:38,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:08:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:08:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 02:08:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:08:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 02:08:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 02:08:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732462551] [2023-11-29 02:08:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732462551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033767845] [2023-11-29 02:08:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:38,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:38,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:08:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:38,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:38,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:08:38,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033767845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:38,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 02:08:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061518354] [2023-11-29 02:08:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:38,322 INFO L87 Difference]: Start difference. First operand 4658 states and 6910 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 02:08:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:38,711 INFO L93 Difference]: Finished difference Result 4990 states and 7326 transitions. [2023-11-29 02:08:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-11-29 02:08:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:38,728 INFO L225 Difference]: With dead ends: 4990 [2023-11-29 02:08:38,728 INFO L226 Difference]: Without dead ends: 3837 [2023-11-29 02:08:38,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:08:38,734 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 55 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:38,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 648 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:08:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2023-11-29 02:08:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3837. [2023-11-29 02:08:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3342 states have (on average 1.5275284260921604) internal successors, (5105), 3377 states have internal predecessors, (5105), 314 states have call successors, (314), 157 states have call predecessors, (314), 180 states have return successors, (437), 318 states have call predecessors, (437), 312 states have call successors, (437) [2023-11-29 02:08:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 5856 transitions. [2023-11-29 02:08:39,016 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 5856 transitions. Word has length 92 [2023-11-29 02:08:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:39,016 INFO L495 AbstractCegarLoop]: Abstraction has 3837 states and 5856 transitions. [2023-11-29 02:08:39,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 02:08:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 5856 transitions. [2023-11-29 02:08:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 02:08:39,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:39,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:08:39,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:08:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:39,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:39,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash 202964871, now seen corresponding path program 1 times [2023-11-29 02:08:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743151337] [2023-11-29 02:08:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:08:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:08:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:08:39,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743151337] [2023-11-29 02:08:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743151337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663920776] [2023-11-29 02:08:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:39,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:39,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:39,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:39,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:08:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:39,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:39,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:08:39,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663920776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:39,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:39,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:08:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146265357] [2023-11-29 02:08:39,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:39,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:39,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:39,546 INFO L87 Difference]: Start difference. First operand 3837 states and 5856 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:08:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:40,036 INFO L93 Difference]: Finished difference Result 11406 states and 17532 transitions. [2023-11-29 02:08:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:40,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-11-29 02:08:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:40,055 INFO L225 Difference]: With dead ends: 11406 [2023-11-29 02:08:40,055 INFO L226 Difference]: Without dead ends: 7581 [2023-11-29 02:08:40,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:40,068 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 215 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:40,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 496 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:08:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2023-11-29 02:08:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7551. [2023-11-29 02:08:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7551 states, 6582 states have (on average 1.5232452142206017) internal successors, (10026), 6650 states have internal predecessors, (10026), 608 states have call successors, (608), 313 states have call predecessors, (608), 360 states have return successors, (841), 603 states have call predecessors, (841), 606 states have call successors, (841) [2023-11-29 02:08:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7551 states to 7551 states and 11475 transitions. [2023-11-29 02:08:40,555 INFO L78 Accepts]: Start accepts. Automaton has 7551 states and 11475 transitions. Word has length 132 [2023-11-29 02:08:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:40,556 INFO L495 AbstractCegarLoop]: Abstraction has 7551 states and 11475 transitions. [2023-11-29 02:08:40,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:08:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7551 states and 11475 transitions. [2023-11-29 02:08:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 02:08:40,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:40,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:08:40,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:08:40,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:40,772 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:40,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash 475879591, now seen corresponding path program 1 times [2023-11-29 02:08:40,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622374220] [2023-11-29 02:08:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:08:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:08:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:08:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622374220] [2023-11-29 02:08:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622374220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099824925] [2023-11-29 02:08:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:40,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:40,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:40,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:08:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:41,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:41,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:08:41,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099824925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:41,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:41,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:08:41,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042219149] [2023-11-29 02:08:41,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:41,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:41,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:41,105 INFO L87 Difference]: Start difference. First operand 7551 states and 11475 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:08:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:42,091 INFO L93 Difference]: Finished difference Result 22468 states and 34393 transitions. [2023-11-29 02:08:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:42,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-11-29 02:08:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:42,133 INFO L225 Difference]: With dead ends: 22468 [2023-11-29 02:08:42,133 INFO L226 Difference]: Without dead ends: 14929 [2023-11-29 02:08:42,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:42,156 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 205 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:42,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:08:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14929 states. [2023-11-29 02:08:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14929 to 14873. [2023-11-29 02:08:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14873 states, 12970 states have (on average 1.5187355435620664) internal successors, (19698), 13104 states have internal predecessors, (19698), 1182 states have call successors, (1182), 625 states have call predecessors, (1182), 720 states have return successors, (1635), 1159 states have call predecessors, (1635), 1180 states have call successors, (1635) [2023-11-29 02:08:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14873 states to 14873 states and 22515 transitions. [2023-11-29 02:08:43,171 INFO L78 Accepts]: Start accepts. Automaton has 14873 states and 22515 transitions. Word has length 132 [2023-11-29 02:08:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:43,171 INFO L495 AbstractCegarLoop]: Abstraction has 14873 states and 22515 transitions. [2023-11-29 02:08:43,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:08:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 14873 states and 22515 transitions. [2023-11-29 02:08:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 02:08:43,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:43,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:08:43,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:08:43,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:43,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:43,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash -798451257, now seen corresponding path program 1 times [2023-11-29 02:08:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:43,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71451305] [2023-11-29 02:08:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:08:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 02:08:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:08:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71451305] [2023-11-29 02:08:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71451305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976993816] [2023-11-29 02:08:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:43,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:43,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:43,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:08:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:43,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:43,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:08:43,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976993816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:43,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:08:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060371737] [2023-11-29 02:08:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:43,740 INFO L87 Difference]: Start difference. First operand 14873 states and 22515 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 02:08:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:45,940 INFO L93 Difference]: Finished difference Result 43885 states and 67152 transitions. [2023-11-29 02:08:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 132 [2023-11-29 02:08:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:46,032 INFO L225 Difference]: With dead ends: 43885 [2023-11-29 02:08:46,032 INFO L226 Difference]: Without dead ends: 29025 [2023-11-29 02:08:46,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:46,061 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 217 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:46,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 684 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:08:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29025 states. [2023-11-29 02:08:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29025 to 29025. [2023-11-29 02:08:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29025 states, 25295 states have (on average 1.509626408381103) internal successors, (38186), 25526 states have internal predecessors, (38186), 2289 states have call successors, (2289), 1249 states have call predecessors, (2289), 1440 states have return successors, (3678), 2281 states have call predecessors, (3678), 2287 states have call successors, (3678) [2023-11-29 02:08:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29025 states to 29025 states and 44153 transitions. [2023-11-29 02:08:48,368 INFO L78 Accepts]: Start accepts. Automaton has 29025 states and 44153 transitions. Word has length 132 [2023-11-29 02:08:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:48,368 INFO L495 AbstractCegarLoop]: Abstraction has 29025 states and 44153 transitions. [2023-11-29 02:08:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 02:08:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 29025 states and 44153 transitions. [2023-11-29 02:08:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-29 02:08:48,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:48,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:48,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:08:48,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:48,638 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:48,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:48,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2041225473, now seen corresponding path program 1 times [2023-11-29 02:08:48,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:48,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741664006] [2023-11-29 02:08:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:08:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 02:08:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-29 02:08:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:08:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741664006] [2023-11-29 02:08:48,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741664006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575920499] [2023-11-29 02:08:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:48,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:48,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:48,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:48,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:08:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:48,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:48,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:08:49,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575920499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:49,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:49,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:08:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156773204] [2023-11-29 02:08:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:49,112 INFO L87 Difference]: Start difference. First operand 29025 states and 44153 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:08:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:52,349 INFO L93 Difference]: Finished difference Result 86203 states and 132212 transitions. [2023-11-29 02:08:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:08:52,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-11-29 02:08:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:52,488 INFO L225 Difference]: With dead ends: 86203 [2023-11-29 02:08:52,488 INFO L226 Difference]: Without dead ends: 57197 [2023-11-29 02:08:52,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:52,538 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 160 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:08:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57197 states. [2023-11-29 02:08:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57197 to 56985. [2023-11-29 02:08:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56985 states, 49743 states have (on average 1.5056188810485898) internal successors, (74894), 50202 states have internal predecessors, (74894), 4361 states have call successors, (4361), 2497 states have call predecessors, (4361), 2880 states have return successors, (7006), 4317 states have call predecessors, (7006), 4359 states have call successors, (7006) [2023-11-29 02:08:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56985 states to 56985 states and 86261 transitions. [2023-11-29 02:08:56,946 INFO L78 Accepts]: Start accepts. Automaton has 56985 states and 86261 transitions. Word has length 170 [2023-11-29 02:08:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:56,946 INFO L495 AbstractCegarLoop]: Abstraction has 56985 states and 86261 transitions. [2023-11-29 02:08:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:08:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 56985 states and 86261 transitions. [2023-11-29 02:08:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-29 02:08:57,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:57,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:57,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:08:57,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 02:08:57,233 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1702009955, now seen corresponding path program 1 times [2023-11-29 02:08:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:57,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927795229] [2023-11-29 02:08:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:08:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:08:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:08:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:08:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:08:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:08:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:08:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:08:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-29 02:08:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:08:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927795229] [2023-11-29 02:08:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927795229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745612928] [2023-11-29 02:08:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:57,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:57,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:57,403 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:57,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:08:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:57,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:08:57,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:08:57,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745612928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:57,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:57,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 02:08:57,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465121822] [2023-11-29 02:08:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:57,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:08:57,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:08:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:08:57,710 INFO L87 Difference]: Start difference. First operand 56985 states and 86261 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:09:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:05,126 INFO L93 Difference]: Finished difference Result 169029 states and 257664 transitions. [2023-11-29 02:09:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:09:05,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-11-29 02:09:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:05,466 INFO L225 Difference]: With dead ends: 169029 [2023-11-29 02:09:05,466 INFO L226 Difference]: Without dead ends: 112063 [2023-11-29 02:09:05,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:05,583 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 162 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:05,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 477 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:09:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112063 states. [2023-11-29 02:09:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112063 to 111643. [2023-11-29 02:09:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111643 states, 97733 states have (on average 1.5018468685091013) internal successors, (146780), 98648 states have internal predecessors, (146780), 8223 states have call successors, (8223), 4919 states have call predecessors, (8223), 5686 states have return successors, (13220), 8107 states have call predecessors, (13220), 8221 states have call successors, (13220) [2023-11-29 02:09:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111643 states to 111643 states and 168223 transitions. [2023-11-29 02:09:12,558 INFO L78 Accepts]: Start accepts. Automaton has 111643 states and 168223 transitions. Word has length 170 [2023-11-29 02:09:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:12,558 INFO L495 AbstractCegarLoop]: Abstraction has 111643 states and 168223 transitions. [2023-11-29 02:09:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:09:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 111643 states and 168223 transitions. [2023-11-29 02:09:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 02:09:12,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:12,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:12,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:09:12,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:09:12,945 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:12,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1132086750, now seen corresponding path program 1 times [2023-11-29 02:09:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:12,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252588641] [2023-11-29 02:09:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:09:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:09:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:09:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:09:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:09:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 02:09:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:09:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 02:09:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 02:09:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 02:09:13,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252588641] [2023-11-29 02:09:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252588641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151268477] [2023-11-29 02:09:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:13,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:13,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:09:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:13,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:09:13,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:09:13,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151268477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:13,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:09:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686967519] [2023-11-29 02:09:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:13,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:09:13,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:09:13,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:13,370 INFO L87 Difference]: Start difference. First operand 111643 states and 168223 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:09:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:18,599 INFO L93 Difference]: Finished difference Result 176353 states and 267050 transitions. [2023-11-29 02:09:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:09:18,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 188 [2023-11-29 02:09:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:18,838 INFO L225 Difference]: With dead ends: 176353 [2023-11-29 02:09:18,838 INFO L226 Difference]: Without dead ends: 97839 [2023-11-29 02:09:18,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:18,959 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 185 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:18,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 278 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:09:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97839 states. [2023-11-29 02:09:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97839 to 71255. [2023-11-29 02:09:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71255 states, 62489 states have (on average 1.4593288418761703) internal successors, (91192), 62964 states have internal predecessors, (91192), 5107 states have call successors, (5107), 3275 states have call predecessors, (5107), 3658 states have return successors, (7278), 5031 states have call predecessors, (7278), 5105 states have call successors, (7278) [2023-11-29 02:09:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71255 states to 71255 states and 103577 transitions. [2023-11-29 02:09:23,839 INFO L78 Accepts]: Start accepts. Automaton has 71255 states and 103577 transitions. Word has length 188 [2023-11-29 02:09:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:23,839 INFO L495 AbstractCegarLoop]: Abstraction has 71255 states and 103577 transitions. [2023-11-29 02:09:23,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:09:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 71255 states and 103577 transitions. [2023-11-29 02:09:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 02:09:23,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:23,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:23,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:09:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 02:09:24,132 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:24,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1546302273, now seen corresponding path program 1 times [2023-11-29 02:09:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116692790] [2023-11-29 02:09:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:09:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:09:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:09:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:09:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:09:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 02:09:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:09:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 02:09:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 02:09:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 02:09:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116692790] [2023-11-29 02:09:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116692790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087121519] [2023-11-29 02:09:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:24,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:24,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:24,291 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:24,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:09:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:24,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:09:24,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 02:09:24,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087121519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:09:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119439961] [2023-11-29 02:09:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:24,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:09:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:09:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:24,529 INFO L87 Difference]: Start difference. First operand 71255 states and 103577 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 02:09:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:28,777 INFO L93 Difference]: Finished difference Result 125372 states and 181564 transitions. [2023-11-29 02:09:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:09:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 188 [2023-11-29 02:09:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:28,931 INFO L225 Difference]: With dead ends: 125372 [2023-11-29 02:09:28,931 INFO L226 Difference]: Without dead ends: 76065 [2023-11-29 02:09:28,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:28,984 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 177 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:28,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 518 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:09:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76065 states. [2023-11-29 02:09:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76065 to 75917. [2023-11-29 02:09:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75917 states, 66683 states have (on average 1.433678748706567) internal successors, (95602), 67158 states have internal predecessors, (95602), 5253 states have call successors, (5253), 3597 states have call predecessors, (5253), 3980 states have return successors, (7746), 5177 states have call predecessors, (7746), 5251 states have call successors, (7746) [2023-11-29 02:09:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75917 states to 75917 states and 108601 transitions. [2023-11-29 02:09:33,697 INFO L78 Accepts]: Start accepts. Automaton has 75917 states and 108601 transitions. Word has length 188 [2023-11-29 02:09:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:33,697 INFO L495 AbstractCegarLoop]: Abstraction has 75917 states and 108601 transitions. [2023-11-29 02:09:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 02:09:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 75917 states and 108601 transitions. [2023-11-29 02:09:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:09:33,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:33,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:33,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:09:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:09:33,991 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:33,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -923802543, now seen corresponding path program 1 times [2023-11-29 02:09:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112443779] [2023-11-29 02:09:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:09:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:09:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:09:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:09:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:09:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:09:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:09:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 02:09:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 02:09:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 02:09:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112443779] [2023-11-29 02:09:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112443779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196667555] [2023-11-29 02:09:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:34,130 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:34,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:09:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:34,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:09:34,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 02:09:34,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196667555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:09:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414597977] [2023-11-29 02:09:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:09:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:09:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:34,318 INFO L87 Difference]: Start difference. First operand 75917 states and 108601 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 02:09:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:42,533 INFO L93 Difference]: Finished difference Result 224891 states and 325207 transitions. [2023-11-29 02:09:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:09:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 189 [2023-11-29 02:09:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:42,958 INFO L225 Difference]: With dead ends: 224891 [2023-11-29 02:09:42,958 INFO L226 Difference]: Without dead ends: 148995 [2023-11-29 02:09:43,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:43,062 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 227 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:43,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 687 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:09:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148995 states. [2023-11-29 02:09:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148995 to 148931. [2023-11-29 02:09:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148931 states, 130875 states have (on average 1.4272397325692454) internal successors, (186790), 131824 states have internal predecessors, (186790), 10179 states have call successors, (10179), 7109 states have call predecessors, (10179), 7876 states have return successors, (18184), 10029 states have call predecessors, (18184), 10177 states have call successors, (18184) [2023-11-29 02:09:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148931 states to 148931 states and 215153 transitions. [2023-11-29 02:09:52,401 INFO L78 Accepts]: Start accepts. Automaton has 148931 states and 215153 transitions. Word has length 189 [2023-11-29 02:09:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 148931 states and 215153 transitions. [2023-11-29 02:09:52,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 02:09:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 148931 states and 215153 transitions. [2023-11-29 02:09:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:09:52,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:52,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:52,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:09:53,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:09:53,102 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:53,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1804127421, now seen corresponding path program 1 times [2023-11-29 02:09:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:53,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084826620] [2023-11-29 02:09:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:09:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:09:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:09:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:09:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:09:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:09:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:09:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 02:09:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:09:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 02:09:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 02:09:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084826620] [2023-11-29 02:09:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084826620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:09:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443530621] [2023-11-29 02:09:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:53,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:53,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:09:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:53,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:09:53,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:09:53,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443530621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:53,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:09:53,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:09:53,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463750075] [2023-11-29 02:09:53,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:53,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:09:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:09:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:53,523 INFO L87 Difference]: Start difference. First operand 148931 states and 215153 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:10:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:10:03,477 INFO L93 Difference]: Finished difference Result 305515 states and 448146 transitions. [2023-11-29 02:10:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:10:03,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 189 [2023-11-29 02:10:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:10:03,983 INFO L225 Difference]: With dead ends: 305515 [2023-11-29 02:10:03,983 INFO L226 Difference]: Without dead ends: 156619 [2023-11-29 02:10:04,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:10:04,176 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 183 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:10:04,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 275 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:10:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156619 states. [2023-11-29 02:10:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156619 to 156559. [2023-11-29 02:10:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156559 states, 137951 states have (on average 1.402483490514748) internal successors, (193474), 138900 states have internal predecessors, (193474), 10335 states have call successors, (10335), 7505 states have call predecessors, (10335), 8272 states have return successors, (18358), 10185 states have call predecessors, (18358), 10333 states have call successors, (18358) [2023-11-29 02:10:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156559 states to 156559 states and 222167 transitions. [2023-11-29 02:10:14,630 INFO L78 Accepts]: Start accepts. Automaton has 156559 states and 222167 transitions. Word has length 189 [2023-11-29 02:10:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:10:14,630 INFO L495 AbstractCegarLoop]: Abstraction has 156559 states and 222167 transitions. [2023-11-29 02:10:14,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:10:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 156559 states and 222167 transitions. [2023-11-29 02:10:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:10:15,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:15,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:15,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:10:15,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:10:15,315 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:15,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash 949139842, now seen corresponding path program 1 times [2023-11-29 02:10:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926448268] [2023-11-29 02:10:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:10:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:10:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:10:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:10:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:10:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:10:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:10:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:10:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 02:10:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:10:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 02:10:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 02:10:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926448268] [2023-11-29 02:10:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926448268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471054060] [2023-11-29 02:10:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:15,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:15,458 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:15,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:10:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:15,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:10:15,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:10:15,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471054060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:10:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483340224] [2023-11-29 02:10:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:10:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:10:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:10:15,623 INFO L87 Difference]: Start difference. First operand 156559 states and 222167 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 02:10:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:10:33,326 INFO L93 Difference]: Finished difference Result 464415 states and 668615 transitions. [2023-11-29 02:10:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:10:33,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 189 [2023-11-29 02:10:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:10:34,315 INFO L225 Difference]: With dead ends: 464415 [2023-11-29 02:10:34,315 INFO L226 Difference]: Without dead ends: 307891 [2023-11-29 02:10:34,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:10:34,544 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 217 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:10:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 685 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:10:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307891 states. [2023-11-29 02:10:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307891 to 307775. [2023-11-29 02:10:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307775 states, 271139 states have (on average 1.3953654767480885) internal successors, (378338), 273036 states have internal predecessors, (378338), 20235 states have call successors, (20235), 14865 states have call predecessors, (20235), 16400 states have return successors, (44944), 19937 states have call predecessors, (44944), 20233 states have call successors, (44944) [2023-11-29 02:10:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307775 states to 307775 states and 443517 transitions. [2023-11-29 02:10:54,821 INFO L78 Accepts]: Start accepts. Automaton has 307775 states and 443517 transitions. Word has length 189 [2023-11-29 02:10:54,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:10:54,822 INFO L495 AbstractCegarLoop]: Abstraction has 307775 states and 443517 transitions. [2023-11-29 02:10:54,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 02:10:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 307775 states and 443517 transitions. [2023-11-29 02:10:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:10:55,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:55,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:55,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:10:55,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:55,928 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:55,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 863299900, now seen corresponding path program 1 times [2023-11-29 02:10:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:55,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315807913] [2023-11-29 02:10:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:10:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:10:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:10:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:10:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:10:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:10:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:10:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:10:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 02:10:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:10:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 02:10:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-29 02:10:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315807913] [2023-11-29 02:10:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315807913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766768271] [2023-11-29 02:10:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:56,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:56,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:56,075 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:56,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:10:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:10:56,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 02:10:56,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766768271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:56,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:10:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970306246] [2023-11-29 02:10:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:56,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:10:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:10:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:10:56,353 INFO L87 Difference]: Start difference. First operand 307775 states and 443517 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:11:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:16,477 INFO L93 Difference]: Finished difference Result 645171 states and 945883 transitions. [2023-11-29 02:11:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:11:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 189 [2023-11-29 02:11:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:17,468 INFO L225 Difference]: With dead ends: 645171 [2023-11-29 02:11:17,469 INFO L226 Difference]: Without dead ends: 337439 [2023-11-29 02:11:18,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:11:18,112 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 180 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:18,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 271 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:11:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337439 states. [2023-11-29 02:11:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337439 to 336847. [2023-11-29 02:11:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336847 states, 298963 states have (on average 1.3625298113813415) internal successors, (407346), 300860 states have internal predecessors, (407346), 20379 states have call successors, (20379), 15969 states have call predecessors, (20379), 17504 states have return successors, (44644), 20081 states have call predecessors, (44644), 20377 states have call successors, (44644) [2023-11-29 02:11:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336847 states to 336847 states and 472369 transitions. [2023-11-29 02:11:39,530 INFO L78 Accepts]: Start accepts. Automaton has 336847 states and 472369 transitions. Word has length 189 [2023-11-29 02:11:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:39,530 INFO L495 AbstractCegarLoop]: Abstraction has 336847 states and 472369 transitions. [2023-11-29 02:11:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:11:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 336847 states and 472369 transitions. [2023-11-29 02:11:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:11:40,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:40,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:40,475 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2023-11-29 02:11:40,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:11:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:40,476 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:40,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1238876037, now seen corresponding path program 1 times [2023-11-29 02:11:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170587824] [2023-11-29 02:11:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:11:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:11:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:11:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:11:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:11:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:11:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:11:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 02:11:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:11:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 02:11:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 02:11:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170587824] [2023-11-29 02:11:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170587824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036313816] [2023-11-29 02:11:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:40,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:40,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:40,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dcb7c6d-ebce-45ce-bb42-e596c52fb571/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:11:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:11:40,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:11:40,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036313816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:40,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 02:11:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889314976] [2023-11-29 02:11:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:11:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:11:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:11:40,736 INFO L87 Difference]: Start difference. First operand 336847 states and 472369 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)