./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ --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 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:16:32,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:16:32,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:16:32,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:16:32,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:16:32,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:16:32,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:16:32,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:16:32,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:16:32,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:16:32,331 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:16:32,331 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:16:32,332 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:16:32,333 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:16:32,333 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:16:32,334 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:16:32,335 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:16:32,335 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:16:32,336 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:16:32,336 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:16:32,337 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:16:32,338 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:16:32,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:16:32,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:16:32,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:16:32,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:16:32,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:16:32,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:16:32,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:16:32,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:16:32,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:16:32,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:16:32,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:16:32,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:32,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:16:32,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:16:32,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:16:32,346 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:16:32,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:16:32,347 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:16:32,348 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:16:32,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:16:32,349 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_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed [2023-11-19 05:16:32,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:16:32,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:16:32,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:16:32,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:16:32,671 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:16:32,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-19 05:16:36,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:16:36,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:16:36,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-19 05:16:36,885 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/data/e47303a4d/dace4282df644751ab26bcfd00ec34af/FLAG94a602895 [2023-11-19 05:16:36,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/data/e47303a4d/dace4282df644751ab26bcfd00ec34af [2023-11-19 05:16:36,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:16:36,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:16:36,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:36,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:16:36,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:16:36,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:36" (1/1) ... [2023-11-19 05:16:36,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc82d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:36, skipping insertion in model container [2023-11-19 05:16:36,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:36" (1/1) ... [2023-11-19 05:16:37,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:40,556 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_5da61957-ea26-4234-be7e-023c1f269c34/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2023-11-19 05:16:40,563 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_5da61957-ea26-4234-be7e-023c1f269c34/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2023-11-19 05:16:40,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:40,678 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:16:40,823 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"); [5400] [2023-11-19 05:16:40,825 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)); [5407] [2023-11-19 05:16:40,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5414] [2023-11-19 05:16:41,149 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_5da61957-ea26-4234-be7e-023c1f269c34/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2023-11-19 05:16:41,150 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_5da61957-ea26-4234-be7e-023c1f269c34/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2023-11-19 05:16:41,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:41,434 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:16:41,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41 WrapperNode [2023-11-19 05:16:41,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:41,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:41,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:16:41,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:16:41,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:41,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:41,947 INFO L138 Inliner]: procedures = 393, calls = 3417, calls flagged for inlining = 187, calls inlined = 167, statements flattened = 6275 [2023-11-19 05:16:41,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:41,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:16:41,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:16:41,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:16:41,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:41,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:16:42,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:16:42,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:16:42,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:16:42,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (1/1) ... [2023-11-19 05:16:42,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:42,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:42,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:16:42,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da61957-ea26-4234-be7e-023c1f269c34/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:16:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:16:42,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:16:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-19 05:16:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-19 05:16:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:16:42,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:16:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-19 05:16:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-19 05:16:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-11-19 05:16:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-11-19 05:16:42,529 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2023-11-19 05:16:42,529 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2023-11-19 05:16:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-19 05:16:42,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-19 05:16:42,530 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-19 05:16:42,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-19 05:16:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:16:42,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:16:42,531 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 05:16:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 05:16:42,532 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-19 05:16:42,532 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-19 05:16:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:16:42,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:16:42,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:16:42,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-19 05:16:42,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-19 05:16:42,535 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2023-11-19 05:16:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2023-11-19 05:16:42,535 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:16:42,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:16:42,535 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-19 05:16:42,536 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-19 05:16:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2023-11-19 05:16:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2023-11-19 05:16:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:16:42,537 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-19 05:16:42,537 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-19 05:16:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:16:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2023-11-19 05:16:42,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2023-11-19 05:16:42,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:16:42,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:16:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:16:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:16:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:16:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-19 05:16:42,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-19 05:16:42,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:16:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:16:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2023-11-19 05:16:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2023-11-19 05:16:42,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:16:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:16:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:16:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:16:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:16:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:16:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:16:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:16:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2023-11-19 05:16:42,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2023-11-19 05:16:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2023-11-19 05:16:42,544 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2023-11-19 05:16:42,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:16:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:16:42,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:16:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:16:42,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:16:42,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:16:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:16:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:16:42,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:16:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-19 05:16:42,546 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-19 05:16:42,546 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-19 05:16:42,547 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-19 05:16:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:16:42,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:16:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-19 05:16:42,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-19 05:16:42,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:16:42,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:16:42,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-19 05:16:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-19 05:16:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-19 05:16:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-19 05:16:42,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:16:42,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:16:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2023-11-19 05:16:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2023-11-19 05:16:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:16:42,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:16:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:16:42,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:16:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:16:42,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:16:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2023-11-19 05:16:42,551 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2023-11-19 05:16:42,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:16:42,552 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:16:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2023-11-19 05:16:42,552 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2023-11-19 05:16:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:16:42,552 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:16:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2023-11-19 05:16:42,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2023-11-19 05:16:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 05:16:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 05:16:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-19 05:16:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-19 05:16:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:16:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2023-11-19 05:16:42,555 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2023-11-19 05:16:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-19 05:16:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-19 05:16:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:16:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2023-11-19 05:16:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2023-11-19 05:16:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2023-11-19 05:16:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2023-11-19 05:16:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:16:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:16:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:16:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:16:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:16:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-19 05:16:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-19 05:16:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2023-11-19 05:16:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2023-11-19 05:16:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 05:16:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 05:16:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:16:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:16:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2023-11-19 05:16:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2023-11-19 05:16:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:16:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:16:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-19 05:16:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-19 05:16:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:16:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:16:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2023-11-19 05:16:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2023-11-19 05:16:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2023-11-19 05:16:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2023-11-19 05:16:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:16:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:16:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:16:42,571 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:16:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-19 05:16:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-19 05:16:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:16:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:16:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:16:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:16:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:16:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-19 05:16:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-19 05:16:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-19 05:16:42,579 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-19 05:16:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:16:42,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:16:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2023-11-19 05:16:42,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2023-11-19 05:16:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-11-19 05:16:42,580 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-11-19 05:16:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-19 05:16:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2023-11-19 05:16:42,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2023-11-19 05:16:42,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:16:42,581 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-11-19 05:16:42,581 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-11-19 05:16:42,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:16:42,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:16:43,577 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:16:43,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:16:44,613 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:16:51,644 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:16:52,245 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:16:55,013 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:16:55,014 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:16:55,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:55 BoogieIcfgContainer [2023-11-19 05:16:55,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:16:55,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:16:55,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:16:55,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:16:55,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:36" (1/3) ... [2023-11-19 05:16:55,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c5905e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:55, skipping insertion in model container [2023-11-19 05:16:55,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:41" (2/3) ... [2023-11-19 05:16:55,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c5905e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:55, skipping insertion in model container [2023-11-19 05:16:55,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:55" (3/3) ... [2023-11-19 05:16:55,049 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-19 05:16:55,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:16:55,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:16:55,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:16:55,201 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;@4e6ad187, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:16:55,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:16:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 1144 states, 711 states have (on average 1.3319268635724333) internal successors, (947), 719 states have internal predecessors, (947), 354 states have call successors, (354), 79 states have call predecessors, (354), 78 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2023-11-19 05:16:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-19 05:16:55,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:55,249 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, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:55,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:16:55,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1579124865, now seen corresponding path program 1 times [2023-11-19 05:16:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243496441] [2023-11-19 05:16:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:55,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-19 05:16:57,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243496441] [2023-11-19 05:16:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243496441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:57,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:57,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314940883] [2023-11-19 05:16:57,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:57,203 INFO L87 Difference]: Start difference. First operand has 1144 states, 711 states have (on average 1.3319268635724333) internal successors, (947), 719 states have internal predecessors, (947), 354 states have call successors, (354), 79 states have call predecessors, (354), 78 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 05:17:02,358 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 [] [2023-11-19 05:17:04,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:17:06,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:17:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:06,613 INFO L93 Difference]: Finished difference Result 3337 states and 4858 transitions. [2023-11-19 05:17:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2023-11-19 05:17:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:06,664 INFO L225 Difference]: With dead ends: 3337 [2023-11-19 05:17:06,665 INFO L226 Difference]: Without dead ends: 2153 [2023-11-19 05:17:06,679 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 [2023-11-19 05:17:06,683 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 1550 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:06,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 2838 Invalid, 541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 535 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2023-11-19 05:17:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-11-19 05:17:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2149. [2023-11-19 05:17:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1362 states have (on average 1.3267254038179148) internal successors, (1807), 1376 states have internal predecessors, (1807), 636 states have call successors, (636), 150 states have call predecessors, (636), 150 states have return successors, (636), 631 states have call predecessors, (636), 636 states have call successors, (636) [2023-11-19 05:17:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3079 transitions. [2023-11-19 05:17:07,034 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3079 transitions. Word has length 146 [2023-11-19 05:17:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:07,037 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3079 transitions. [2023-11-19 05:17:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 05:17:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3079 transitions. [2023-11-19 05:17:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-19 05:17:07,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:07,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:17:07,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:07,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 62022081, now seen corresponding path program 1 times [2023-11-19 05:17:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228170196] [2023-11-19 05:17:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-19 05:17:07,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228170196] [2023-11-19 05:17:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228170196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:07,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:07,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:07,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831124287] [2023-11-19 05:17:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:07,979 INFO L87 Difference]: Start difference. First operand 2149 states and 3079 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-19 05:17:11,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:17:15,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:17:17,429 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 [] [2023-11-19 05:17:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:17,535 INFO L93 Difference]: Finished difference Result 6037 states and 8605 transitions. [2023-11-19 05:17:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2023-11-19 05:17:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:17,574 INFO L225 Difference]: With dead ends: 6037 [2023-11-19 05:17:17,574 INFO L226 Difference]: Without dead ends: 3913 [2023-11-19 05:17:17,588 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 [2023-11-19 05:17:17,589 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 1272 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:17,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2603 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 560 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-11-19 05:17:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2023-11-19 05:17:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3907. [2023-11-19 05:17:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3907 states, 2464 states have (on average 1.3125) internal successors, (3234), 2492 states have internal predecessors, (3234), 1154 states have call successors, (1154), 288 states have call predecessors, (1154), 288 states have return successors, (1160), 1140 states have call predecessors, (1160), 1154 states have call successors, (1160) [2023-11-19 05:17:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5548 transitions. [2023-11-19 05:17:17,900 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5548 transitions. Word has length 159 [2023-11-19 05:17:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:17,902 INFO L495 AbstractCegarLoop]: Abstraction has 3907 states and 5548 transitions. [2023-11-19 05:17:17,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-19 05:17:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5548 transitions. [2023-11-19 05:17:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-19 05:17:17,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:17,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:17,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:17:17,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:17:17,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2132986715, now seen corresponding path program 1 times [2023-11-19 05:17:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260568461] [2023-11-19 05:17:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-19 05:17:18,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260568461] [2023-11-19 05:17:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260568461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820086312] [2023-11-19 05:17:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:18,768 INFO L87 Difference]: Start difference. First operand 3907 states and 5548 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)