./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2 --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 c850114a14157388fff72c3ea545dc39574a5dacf1bf063210a2e523cf9f3a54 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:35:37,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:35:37,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:35:37,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:35:37,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:35:37,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:35:37,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:35:37,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:35:37,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:35:37,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:35:37,186 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:35:37,187 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:35:37,187 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:35:37,188 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:35:37,188 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:35:37,188 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:35:37,189 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:35:37,189 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:35:37,189 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:35:37,190 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:35:37,190 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:35:37,194 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:35:37,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:35:37,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:35:37,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:35:37,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:35:37,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:35:37,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:35:37,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:35:37,197 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:35:37,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:35:37,198 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:35:37,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:35:37,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:35:37,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:35:37,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:35:37,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:35:37,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:35:37,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:35:37,201 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:35:37,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:35:37,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:35:37,202 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:35:37,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:35:37,202 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_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c850114a14157388fff72c3ea545dc39574a5dacf1bf063210a2e523cf9f3a54 [2024-11-02 12:35:37,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:35:37,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:35:37,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:35:37,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:35:37,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:35:37,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:35:39,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:35:40,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:35:40,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i [2024-11-02 12:35:40,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/data/03adaaa30/747868e174124229ae33de65dbec88c8/FLAGb491a0983 [2024-11-02 12:35:40,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/data/03adaaa30/747868e174124229ae33de65dbec88c8 [2024-11-02 12:35:40,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:35:40,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:35:40,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:35:40,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:35:40,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:35:40,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:35:40" (1/1) ... [2024-11-02 12:35:40,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b183155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:40, skipping insertion in model container [2024-11-02 12:35:40,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:35:40" (1/1) ... [2024-11-02 12:35:40,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:35:40,935 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2482] [2024-11-02 12:35:40,940 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2483-2484] [2024-11-02 12:35:41,103 WARN L251 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_51bb69fc-cd49-4d81-b9e7-ef85b1729956/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i[72349,72362] [2024-11-02 12:35:41,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:35:41,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:35:41,711 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2482] [2024-11-02 12:35:41,712 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2483-2484] [2024-11-02 12:35:41,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port___0)); [2619] [2024-11-02 12:35:41,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port___0)); [2627] [2024-11-02 12:35:41,737 WARN L251 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_51bb69fc-cd49-4d81-b9e7-ef85b1729956/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i[72349,72362] [2024-11-02 12:35:41,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:35:42,014 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:35:42,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42 WrapperNode [2024-11-02 12:35:42,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:35:42,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:35:42,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:35:42,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:35:42,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,255 INFO L138 Inliner]: procedures = 142, calls = 1053, calls flagged for inlining = 73, calls inlined = 71, statements flattened = 2223 [2024-11-02 12:35:42,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:35:42,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:35:42,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:35:42,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:35:42,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:35:42,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:35:42,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:35:42,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:35:42,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (1/1) ... [2024-11-02 12:35:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:35:42,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:35:42,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:35:42,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bb69fc-cd49-4d81-b9e7-ef85b1729956/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:35:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_free [2024-11-02 12:35:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_free [2024-11-02 12:35:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_do_close [2024-11-02 12:35:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_do_close [2024-11-02 12:35:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-11-02 12:35:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-11-02 12:35:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_add_timer [2024-11-02 12:35:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_add_timer [2024-11-02 12:35:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:35:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_io_loop [2024-11-02 12:35:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_io_loop [2024-11-02 12:35:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:35:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:35:42,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:35:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:35:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_del_timer [2024-11-02 12:35:42,589 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_del_timer [2024-11-02 12:35:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-02 12:35:42,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-02 12:35:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:35:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:35:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_buffer_output [2024-11-02 12:35:42,591 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_buffer_output [2024-11-02 12:35:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_substreams [2024-11-02 12:35:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_substreams [2024-11-02 12:35:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:35:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:35:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:35:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_output_trigger [2024-11-02 12:35:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_output_trigger [2024-11-02 12:35:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:35:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:35:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_do_open [2024-11-02 12:35:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_do_open [2024-11-02 12:35:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:35:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:35:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:35:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:35:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-02 12:35:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-02 12:35:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-11-02 12:35:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-11-02 12:35:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:35:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure snd_serial_unregister_all [2024-11-02 12:35:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_serial_unregister_all [2024-11-02 12:35:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_output_byte [2024-11-02 12:35:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_output_byte [2024-11-02 12:35:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-02 12:35:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-02 12:35:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2024-11-02 12:35:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2024-11-02 12:35:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 12:35:42,597 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 12:35:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure snd_rawmidi_receive [2024-11-02 12:35:42,598 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_rawmidi_receive [2024-11-02 12:35:42,598 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_input_trigger [2024-11-02 12:35:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_input_trigger [2024-11-02 12:35:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:35:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:35:42,599 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2024-11-02 12:35:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2024-11-02 12:35:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2024-11-02 12:35:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2024-11-02 12:35:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:35:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:35:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-11-02 12:35:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-11-02 12:35:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-02 12:35:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-02 12:35:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-02 12:35:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-02 12:35:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:35:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:35:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:35:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure __snd_printk [2024-11-02 12:35:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __snd_printk [2024-11-02 12:35:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:35:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:35:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure snd_rawmidi_set_ops [2024-11-02 12:35:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_rawmidi_set_ops [2024-11-02 12:35:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure snd_uart16550_write_buffer [2024-11-02 12:35:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_uart16550_write_buffer [2024-11-02 12:35:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-02 12:35:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-02 12:35:43,120 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:35:43,123 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:35:43,610 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:35:50,388 INFO L? ?]: Removed 929 outVars from TransFormulas that were not future-live. [2024-11-02 12:35:50,388 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:35:51,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:35:51,513 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:35:51,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:35:51 BoogieIcfgContainer [2024-11-02 12:35:51,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:35:51,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:35:51,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:35:51,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:35:51,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:35:40" (1/3) ... [2024-11-02 12:35:51,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19587b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:35:51, skipping insertion in model container [2024-11-02 12:35:51,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:42" (2/3) ... [2024-11-02 12:35:51,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19587b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:35:51, skipping insertion in model container [2024-11-02 12:35:51,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:35:51" (3/3) ... [2024-11-02 12:35:51,530 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-serial-u16550.ko-entry_point.cil.out.i [2024-11-02 12:35:51,552 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:35:51,553 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:35:51,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:35:51,675 INFO L333 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, 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;@74a7b146, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:35:51,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:35:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 502 states, 324 states have (on average 1.4104938271604939) internal successors, (457), 351 states have internal predecessors, (457), 142 states have call successors, (142), 35 states have call predecessors, (142), 34 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-02 12:35:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:35:51,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:35:51,716 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:35:51,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:35:51,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:35:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash -488946556, now seen corresponding path program 1 times [2024-11-02 12:35:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:35:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050881803] [2024-11-02 12:35:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:35:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:36:08,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050881803] [2024-11-02 12:36:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050881803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288671079] [2024-11-02 12:36:08,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:08,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:08,101 INFO L87 Difference]: Start difference. First operand has 502 states, 324 states have (on average 1.4104938271604939) internal successors, (457), 351 states have internal predecessors, (457), 142 states have call successors, (142), 35 states have call predecessors, (142), 34 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:36:10,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []