./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:22,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:22,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:56:22,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:22,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:22,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:22,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:22,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:22,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:22,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:22,970 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:22,972 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:22,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:22,974 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:22,975 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:22,975 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:22,976 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:22,976 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:22,977 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:22,977 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:22,978 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:22,979 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:22,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:22,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:22,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:22,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:22,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:22,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:22,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:22,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:22,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:22,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:22,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:22,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:22,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:22,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:22,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:22,987 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:22,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:22,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:22,988 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:22,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:22,989 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2023-11-12 00:56:23,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:23,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:23,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:23,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:23,300 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:23,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-12 00:56:26,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:27,203 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:27,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-12 00:56:27,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/data/c57f74639/26459e1f32eb480295aa88ad18039e51/FLAGa96e24f88 [2023-11-12 00:56:27,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/data/c57f74639/26459e1f32eb480295aa88ad18039e51 [2023-11-12 00:56:27,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:27,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:27,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:27,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:27,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:27,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:27" (1/1) ... [2023-11-12 00:56:27,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539078b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:27, skipping insertion in model container [2023-11-12 00:56:27,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:27" (1/1) ... [2023-11-12 00:56:27,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:30,047 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-12 00:56:30,053 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-12 00:56:30,054 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-12 00:56:30,055 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-12 00:56:30,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:30,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:30,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5396] [2023-11-12 00:56:30,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5403] [2023-11-12 00:56:30,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5410] [2023-11-12 00:56:30,541 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-12 00:56:30,541 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-12 00:56:30,542 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-12 00:56:30,542 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_e215c7a9-1e42-4b24-a2e2-50f95cae6375/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-12 00:56:30,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:30,789 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:30,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30 WrapperNode [2023-11-12 00:56:30,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:30,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:30,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:30,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:30,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:30,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,207 INFO L138 Inliner]: procedures = 311, calls = 3195, calls flagged for inlining = 173, calls inlined = 160, statements flattened = 5946 [2023-11-12 00:56:31,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:31,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:31,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:31,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:31,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:31,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:31,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:31,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:31,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (1/1) ... [2023-11-12 00:56:31,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:31,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:31,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:31,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e215c7a9-1e42-4b24-a2e2-50f95cae6375/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2023-11-12 00:56:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2023-11-12 00:56:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-12 00:56:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-12 00:56:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 00:56:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 00:56:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:56:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:56:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:56:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:56:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:56:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:56:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2023-11-12 00:56:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2023-11-12 00:56:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-12 00:56:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-12 00:56:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:56:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:56:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-12 00:56:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-12 00:56:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-11-12 00:56:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-11-12 00:56:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-12 00:56:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-12 00:56:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2023-11-12 00:56:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2023-11-12 00:56:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2023-11-12 00:56:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2023-11-12 00:56:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:56:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:56:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-12 00:56:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-12 00:56:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2023-11-12 00:56:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2023-11-12 00:56:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 00:56:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 00:56:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-12 00:56:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-12 00:56:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-12 00:56:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-12 00:56:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2023-11-12 00:56:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2023-11-12 00:56:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-12 00:56:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-12 00:56:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:56:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2023-11-12 00:56:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2023-11-12 00:56:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:56:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:56:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-12 00:56:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-12 00:56:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-12 00:56:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-12 00:56:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:56:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:56:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2023-11-12 00:56:31,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2023-11-12 00:56:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:56:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:56:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:56:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:56:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:56:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-12 00:56:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-12 00:56:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-12 00:56:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-12 00:56:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2023-11-12 00:56:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2023-11-12 00:56:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:56:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:56:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2023-11-12 00:56:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2023-11-12 00:56:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 00:56:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 00:56:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:56:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:56:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2023-11-12 00:56:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2023-11-12 00:56:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-12 00:56:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-12 00:56:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:56:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:56:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2023-11-12 00:56:31,728 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2023-11-12 00:56:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 00:56:31,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 00:56:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:56:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:56:31,729 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:56:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:56:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2023-11-12 00:56:31,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2023-11-12 00:56:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:56:31,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:56:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-12 00:56:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-12 00:56:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:56:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:56:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:56:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:56:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:56:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2023-11-12 00:56:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2023-11-12 00:56:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:56:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:56:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2023-11-12 00:56:31,732 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2023-11-12 00:56:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2023-11-12 00:56:31,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2023-11-12 00:56:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:56:31,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:56:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-12 00:56:31,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-12 00:56:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:56:31,733 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:56:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 00:56:31,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 00:56:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-12 00:56:31,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-12 00:56:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:56:31,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:56:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:56:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:56:31,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:56:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:56:31,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:56:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2023-11-12 00:56:31,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2023-11-12 00:56:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2023-11-12 00:56:31,735 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2023-11-12 00:56:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:56:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-12 00:56:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-12 00:56:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-12 00:56:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-12 00:56:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-12 00:56:31,736 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-12 00:56:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:56:31,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:56:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:56:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:56:31,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:56:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-12 00:56:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-12 00:56:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-12 00:56:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-12 00:56:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 00:56:31,738 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 00:56:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:56:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:56:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2023-11-12 00:56:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2023-11-12 00:56:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-12 00:56:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-12 00:56:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-11-12 00:56:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-11-12 00:56:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-12 00:56:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-12 00:56:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-12 00:56:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2023-11-12 00:56:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2023-11-12 00:56:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-11-12 00:56:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-11-12 00:56:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:56:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:56:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:31,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:32,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:32,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:33,368 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:56:41,036 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-12 00:56:41,683 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:44,162 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:44,162 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:56:44,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:44 BoogieIcfgContainer [2023-11-12 00:56:44,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:44,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:44,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:44,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:44,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:27" (1/3) ... [2023-11-12 00:56:44,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8013e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:44, skipping insertion in model container [2023-11-12 00:56:44,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:30" (2/3) ... [2023-11-12 00:56:44,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8013e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:44, skipping insertion in model container [2023-11-12 00:56:44,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:44" (3/3) ... [2023-11-12 00:56:44,181 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-12 00:56:44,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:44,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:56:44,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:44,316 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=FINITE_AUTOMATA, 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;@26bcac8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:44,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:56:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2023-11-12 00:56:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 00:56:44,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:44,370 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:44,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:44,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -266642814, now seen corresponding path program 1 times [2023-11-12 00:56:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:44,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290601464] [2023-11-12 00:56:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:44,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-12 00:56:45,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290601464] [2023-11-12 00:56:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290601464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:56:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458690349] [2023-11-12 00:56:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:45,827 INFO L87 Difference]: Start difference. First operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-12 00:56:50,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:52,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:54,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:54,901 INFO L93 Difference]: Finished difference Result 3245 states and 4667 transitions. [2023-11-12 00:56:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:54,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2023-11-12 00:56:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:54,944 INFO L225 Difference]: With dead ends: 3245 [2023-11-12 00:56:54,944 INFO L226 Difference]: Without dead ends: 2131 [2023-11-12 00:56:54,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:54,968 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1521 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:54,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2663 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2023-11-12 00:56:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-11-12 00:56:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-11-12 00:56:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1359 states have (on average 1.3311258278145695) internal successors, (1809), 1376 states have internal predecessors, (1809), 621 states have call successors, (621), 148 states have call predecessors, (621), 147 states have return successors, (618), 614 states have call predecessors, (618), 618 states have call successors, (618) [2023-11-12 00:56:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3048 transitions. [2023-11-12 00:56:55,217 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3048 transitions. Word has length 140 [2023-11-12 00:56:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:55,220 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3048 transitions. [2023-11-12 00:56:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-12 00:56:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3048 transitions. [2023-11-12 00:56:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-12 00:56:55,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:55,236 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:56:55,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:55,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1798007856, now seen corresponding path program 1 times [2023-11-12 00:56:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235787315] [2023-11-12 00:56:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-12 00:56:56,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:56,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235787315] [2023-11-12 00:56:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235787315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:56,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:56:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851629707] [2023-11-12 00:56:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:56,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:56,360 INFO L87 Difference]: Start difference. First operand 2129 states and 3048 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-12 00:57:01,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:57:03,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:57:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:03,270 INFO L93 Difference]: Finished difference Result 5147 states and 7343 transitions. [2023-11-12 00:57:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:57:03,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2023-11-12 00:57:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:03,301 INFO L225 Difference]: With dead ends: 5147 [2023-11-12 00:57:03,302 INFO L226 Difference]: Without dead ends: 3043 [2023-11-12 00:57:03,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:03,316 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 669 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:03,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2682 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-11-12 00:57:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-11-12 00:57:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3032. [2023-11-12 00:57:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1961 states have (on average 1.3396226415094339) internal successors, (2627), 1991 states have internal predecessors, (2627), 838 states have call successors, (838), 232 states have call predecessors, (838), 231 states have return successors, (835), 822 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-12 00:57:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 4300 transitions. [2023-11-12 00:57:03,543 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 4300 transitions. Word has length 201 [2023-11-12 00:57:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:03,547 INFO L495 AbstractCegarLoop]: Abstraction has 3032 states and 4300 transitions. [2023-11-12 00:57:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-12 00:57:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 4300 transitions. [2023-11-12 00:57:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-12 00:57:03,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:03,558 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:57:03,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:03,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1084102403, now seen corresponding path program 1 times [2023-11-12 00:57:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335433830] [2023-11-12 00:57:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-12 00:57:04,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335433830] [2023-11-12 00:57:04,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335433830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:04,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:04,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:57:04,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199531598] [2023-11-12 00:57:04,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:04,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:04,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:04,765 INFO L87 Difference]: Start difference. First operand 3032 states and 4300 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:57:09,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:57:11,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:57:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:11,689 INFO L93 Difference]: Finished difference Result 3032 states and 4300 transitions. [2023-11-12 00:57:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:11,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 188 [2023-11-12 00:57:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:11,713 INFO L225 Difference]: With dead ends: 3032 [2023-11-12 00:57:11,713 INFO L226 Difference]: Without dead ends: 3007 [2023-11-12 00:57:11,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:11,719 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1540 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:11,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2686 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 501 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-11-12 00:57:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-11-12 00:57:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2023-11-12 00:57:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1954 states have (on average 1.3377686796315251) internal successors, (2614), 1978 states have internal predecessors, (2614), 823 states have call successors, (823), 229 states have call predecessors, (823), 229 states have return successors, (823), 813 states have call predecessors, (823), 823 states have call successors, (823) [2023-11-12 00:57:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4260 transitions. [2023-11-12 00:57:11,927 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4260 transitions. Word has length 188 [2023-11-12 00:57:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4260 transitions. [2023-11-12 00:57:11,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 00:57:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4260 transitions. [2023-11-12 00:57:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-12 00:57:11,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:11,941 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:57:11,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:11,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1032414351, now seen corresponding path program 1 times [2023-11-12 00:57:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780273576] [2023-11-12 00:57:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2023-11-12 00:57:12,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780273576] [2023-11-12 00:57:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780273576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:12,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:12,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548301637] [2023-11-12 00:57:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:57:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:57:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:12,603 INFO L87 Difference]: Start difference. First operand 3007 states and 4260 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23)