./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 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/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_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/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_458c6f93-9321-4169-af7e-3f0b7f5b2524/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_458c6f93-9321-4169-af7e-3f0b7f5b2524/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 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:29,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:29,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:13:29,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:29,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:29,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:29,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:29,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:29,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:29,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:29,981 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:29,982 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:29,982 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:29,984 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:29,986 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:29,986 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:29,987 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:29,992 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:29,993 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:29,993 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:29,994 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:29,994 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:29,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:29,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:29,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:29,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:29,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:29,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:29,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:29,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:30,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:30,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:30,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:30,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:30,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:30,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:30,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:30,002 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:30,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:30,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:30,003 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:30,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:30,004 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed [2023-11-12 00:13:30,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:30,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:30,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:30,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:30,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:30,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-12 00:13:33,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:34,340 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:34,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-12 00:13:34,407 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/data/b35733dc8/4361778af3f84e68b0f535de00ea6e57/FLAG1ff271632 [2023-11-12 00:13:34,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/data/b35733dc8/4361778af3f84e68b0f535de00ea6e57 [2023-11-12 00:13:34,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:34,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:34,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:34,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:34,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:34,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:34" (1/1) ... [2023-11-12 00:13:34,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195fec2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:34, skipping insertion in model container [2023-11-12 00:13:34,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:34" (1/1) ... [2023-11-12 00:13:34,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:37,439 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2023-11-12 00:13:37,444 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2023-11-12 00:13:37,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:37,554 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:37,665 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] [2023-11-12 00:13:37,667 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] [2023-11-12 00:13:37,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5414] [2023-11-12 00:13:37,951 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2023-11-12 00:13:37,952 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_458c6f93-9321-4169-af7e-3f0b7f5b2524/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2023-11-12 00:13:37,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:38,249 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:13:38,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38 WrapperNode [2023-11-12 00:13:38,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:38,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:38,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:13:38,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:13:38,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,589 INFO L138 Inliner]: procedures = 393, calls = 3417, calls flagged for inlining = 187, calls inlined = 167, statements flattened = 6275 [2023-11-12 00:13:38,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:13:38,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:13:38,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:13:38,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:13:38,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:38,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:39,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:13:39,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:13:39,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:13:39,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:13:39,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (1/1) ... [2023-11-12 00:13:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:39,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:39,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:13:39,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458c6f93-9321-4169-af7e-3f0b7f5b2524/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:13:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:13:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:13:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-12 00:13:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-12 00:13:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:13:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:13:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-12 00:13:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-12 00:13:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-11-12 00:13:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-11-12 00:13:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2023-11-12 00:13:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2023-11-12 00:13:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-12 00:13:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-12 00:13:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-12 00:13:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-12 00:13:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:13:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:13:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-12 00:13:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-12 00:13:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-12 00:13:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-12 00:13:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:13:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-12 00:13:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-12 00:13:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2023-11-12 00:13:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2023-11-12 00:13:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:13:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:13:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-12 00:13:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-12 00:13:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2023-11-12 00:13:39,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2023-11-12 00:13:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:13:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:13:39,241 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:13:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:13:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2023-11-12 00:13:39,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2023-11-12 00:13:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:13:39,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:13:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-12 00:13:39,242 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-12 00:13:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:13:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-12 00:13:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-12 00:13:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:13:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:13:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2023-11-12 00:13:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2023-11-12 00:13:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-12 00:13:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-12 00:13:39,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 00:13:39,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 00:13:39,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 00:13:39,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 00:13:39,246 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:13:39,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:13:39,247 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2023-11-12 00:13:39,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2023-11-12 00:13:39,248 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2023-11-12 00:13:39,248 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2023-11-12 00:13:39,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:13:39,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-12 00:13:39,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-12 00:13:39,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:13:39,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:13:39,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:13:39,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:13:39,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:13:39,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:13:39,250 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-12 00:13:39,250 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-12 00:13:39,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-12 00:13:39,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-12 00:13:39,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:13:39,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-12 00:13:39,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-12 00:13:39,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-12 00:13:39,251 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 00:13:39,251 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 00:13:39,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-12 00:13:39,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-12 00:13:39,252 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-12 00:13:39,252 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-12 00:13:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:13:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:13:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2023-11-12 00:13:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2023-11-12 00:13:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-12 00:13:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-12 00:13:39,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:13:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:13:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:13:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:13:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2023-11-12 00:13:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2023-11-12 00:13:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-12 00:13:39,254 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-12 00:13:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2023-11-12 00:13:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2023-11-12 00:13:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:13:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:13:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2023-11-12 00:13:39,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2023-11-12 00:13:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 00:13:39,256 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 00:13:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-12 00:13:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-12 00:13:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:13:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2023-11-12 00:13:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2023-11-12 00:13:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-12 00:13:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-12 00:13:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:13:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2023-11-12 00:13:39,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2023-11-12 00:13:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2023-11-12 00:13:39,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2023-11-12 00:13:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:13:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:13:39,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:13:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:13:39,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:13:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-12 00:13:39,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-12 00:13:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2023-11-12 00:13:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2023-11-12 00:13:39,262 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:13:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:13:39,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 00:13:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 00:13:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2023-11-12 00:13:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2023-11-12 00:13:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:13:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:13:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:13:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:13:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:13:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:13:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2023-11-12 00:13:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2023-11-12 00:13:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2023-11-12 00:13:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2023-11-12 00:13:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:13:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:13:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:13:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:13:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-12 00:13:39,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-12 00:13:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:13:39,273 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:13:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:13:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:13:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:13:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-12 00:13:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-12 00:13:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-12 00:13:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-12 00:13:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:13:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:13:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2023-11-12 00:13:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2023-11-12 00:13:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-11-12 00:13:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-11-12 00:13:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-12 00:13:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2023-11-12 00:13:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2023-11-12 00:13:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:13:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-11-12 00:13:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-11-12 00:13:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:13:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:13:40,115 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:13:40,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:13:41,008 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:13:47,364 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-12 00:13:48,025 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:50,729 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:50,729 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:13:50,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:50 BoogieIcfgContainer [2023-11-12 00:13:50,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:50,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:50,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:50,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:50,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:34" (1/3) ... [2023-11-12 00:13:50,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef539a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:50, skipping insertion in model container [2023-11-12 00:13:50,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:38" (2/3) ... [2023-11-12 00:13:50,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef539a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:50, skipping insertion in model container [2023-11-12 00:13:50,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:50" (3/3) ... [2023-11-12 00:13:50,747 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2023-11-12 00:13:50,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:50,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:13:50,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:50,868 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;@124bffe7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:50,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:13:50,879 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) [2023-11-12 00:13:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-12 00:13:50,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:50,908 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] [2023-11-12 00:13:50,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:13:50,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1579124865, now seen corresponding path program 1 times [2023-11-12 00:13:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748022148] [2023-11-12 00:13:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:50,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:52,407 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 00:13:52,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:52,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748022148] [2023-11-12 00:13:52,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748022148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:52,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054735367] [2023-11-12 00:13:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:52,476 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) [2023-11-12 00:13:57,625 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 00:13:59,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:14:01,675 WARN L539 Checker$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 00:14:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:01,876 INFO L93 Difference]: Finished difference Result 3337 states and 4858 transitions. [2023-11-12 00:14:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:01,879 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 [2023-11-12 00:14:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:01,930 INFO L225 Difference]: With dead ends: 3337 [2023-11-12 00:14:01,930 INFO L226 Difference]: Without dead ends: 2153 [2023-11-12 00:14:01,945 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 00:14:01,950 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 1550 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:01,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 2838 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 535 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2023-11-12 00:14:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-11-12 00:14:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2149. [2023-11-12 00:14:02,229 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) [2023-11-12 00:14:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3079 transitions. [2023-11-12 00:14:02,264 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3079 transitions. Word has length 146 [2023-11-12 00:14:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:02,268 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3079 transitions. [2023-11-12 00:14:02,268 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) [2023-11-12 00:14:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3079 transitions. [2023-11-12 00:14:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-12 00:14:02,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:02,288 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] [2023-11-12 00:14:02,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:14:02,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:02,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash 62022081, now seen corresponding path program 1 times [2023-11-12 00:14:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043944987] [2023-11-12 00:14:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:03,043 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 00:14:03,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043944987] [2023-11-12 00:14:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043944987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824446218] [2023-11-12 00:14:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:03,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:03,055 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) [2023-11-12 00:14:06,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:14:10,715 WARN L539 Checker$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 00:14:12,725 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 00:14:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:12,825 INFO L93 Difference]: Finished difference Result 6037 states and 8605 transitions. [2023-11-12 00:14:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:12,825 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 [2023-11-12 00:14:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:12,861 INFO L225 Difference]: With dead ends: 6037 [2023-11-12 00:14:12,861 INFO L226 Difference]: Without dead ends: 3913 [2023-11-12 00:14:12,874 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 00:14:12,875 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 1272 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s 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, 9.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:12,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2603 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 560 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2023-11-12 00:14:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2023-11-12 00:14:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3907. [2023-11-12 00:14:13,098 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) [2023-11-12 00:14:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5548 transitions. [2023-11-12 00:14:13,133 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5548 transitions. Word has length 159 [2023-11-12 00:14:13,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:13,136 INFO L495 AbstractCegarLoop]: Abstraction has 3907 states and 5548 transitions. [2023-11-12 00:14:13,138 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) [2023-11-12 00:14:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5548 transitions. [2023-11-12 00:14:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-12 00:14:13,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:13,144 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] [2023-11-12 00:14:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:14:13,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:13,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2132986715, now seen corresponding path program 1 times [2023-11-12 00:14:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623973530] [2023-11-12 00:14:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:13,959 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 00:14:13,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623973530] [2023-11-12 00:14:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623973530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:13,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:13,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312652374] [2023-11-12 00:14:13,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:13,964 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) [2023-11-12 00:14:19,052 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 00:14:21,059 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 []