./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire --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 1d08dc08d1adbb7da804a516a83dc1dfdba0f9e1c9fbdcda9ca265322e9a6493 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:11,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:11,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:40:11,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:11,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:11,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:11,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:11,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:11,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:11,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:11,592 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:11,592 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:11,593 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:11,594 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:11,595 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:11,595 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:11,596 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:11,596 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:11,597 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:11,597 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:11,599 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:11,600 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:11,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:11,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:40:11,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:11,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:11,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:40:11,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:11,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:40:11,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:40:11,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:11,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:11,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:11,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:11,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:11,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:11,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:11,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:40:11,608 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:11,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:11,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:11,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:40:11,609 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:11,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:11,610 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_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d08dc08d1adbb7da804a516a83dc1dfdba0f9e1c9fbdcda9ca265322e9a6493 [2023-11-23 20:40:11,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:12,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:12,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:12,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:12,014 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:12,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-11-23 20:40:15,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:15,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:15,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-11-23 20:40:15,614 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/data/1469c9efe/4f74d0b1f6bb4569833082bd6799eb59/FLAGa78ad496c [2023-11-23 20:40:15,634 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/data/1469c9efe/4f74d0b1f6bb4569833082bd6799eb59 [2023-11-23 20:40:15,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:15,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:15,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:15,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:15,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a107a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15, skipping insertion in model container [2023-11-23 20:40:15,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:16,680 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_92f2accc-f40a-47b0-8602-411d0be20032/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i[149288,149301] [2023-11-23 20:40:17,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:17,088 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:17,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5007] [2023-11-23 20:40:17,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5014] [2023-11-23 20:40:17,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5052] [2023-11-23 20:40:17,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5060] [2023-11-23 20:40:17,295 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_92f2accc-f40a-47b0-8602-411d0be20032/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i[149288,149301] [2023-11-23 20:40:17,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:17,459 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:17,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17 WrapperNode [2023-11-23 20:40:17,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:17,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:17,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:17,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:17,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,652 INFO L138 Inliner]: procedures = 102, calls = 566, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 2134 [2023-11-23 20:40:17,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:17,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:17,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:17,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:17,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:17,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:17,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:17,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:17,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (1/1) ... [2023-11-23 20:40:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:17,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:17,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:40:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:40:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:40:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 20:40:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 20:40:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:40:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:40:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2023-11-23 20:40:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2023-11-23 20:40:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-23 20:40:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-23 20:40:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:40:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:40:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 20:40:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 20:40:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:40:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:40:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:40:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-23 20:40:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-23 20:40:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:40:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:40:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:40:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 20:40:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 20:40:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:40:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:40:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 20:40:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 20:40:17,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:40:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-23 20:40:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-23 20:40:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:40:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 20:40:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 20:40:17,968 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:40:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:40:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:40:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:40:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 20:40:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 20:40:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 20:40:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 20:40:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 20:40:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 20:40:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:40:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-23 20:40:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-23 20:40:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-23 20:40:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-23 20:40:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-23 20:40:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-23 20:40:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:18,347 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:18,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:18,587 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:40:20,046 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:21,003 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:21,003 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:40:21,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:21 BoogieIcfgContainer [2023-11-23 20:40:21,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:21,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:21,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:21,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:21,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:15" (1/3) ... [2023-11-23 20:40:21,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26719c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:21, skipping insertion in model container [2023-11-23 20:40:21,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:17" (2/3) ... [2023-11-23 20:40:21,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26719c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:21, skipping insertion in model container [2023-11-23 20:40:21,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:21" (3/3) ... [2023-11-23 20:40:21,015 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-11-23 20:40:21,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:21,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:40:21,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:21,107 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;@6e8f7c1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:21,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:40:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 512 states, 347 states have (on average 1.3804034582132565) internal successors, (479), 361 states have internal predecessors, (479), 142 states have call successors, (142), 22 states have call predecessors, (142), 21 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-23 20:40:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:40:21,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:21,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1198170910, now seen corresponding path program 1 times [2023-11-23 20:40:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200922136] [2023-11-23 20:40:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:21,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200922136] [2023-11-23 20:40:21,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200922136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166619890] [2023-11-23 20:40:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:21,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,780 INFO L87 Difference]: Start difference. First operand has 512 states, 347 states have (on average 1.3804034582132565) internal successors, (479), 361 states have internal predecessors, (479), 142 states have call successors, (142), 22 states have call predecessors, (142), 21 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,225 INFO L93 Difference]: Finished difference Result 1076 states and 1587 transitions. [2023-11-23 20:40:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 20:40:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,244 INFO L225 Difference]: With dead ends: 1076 [2023-11-23 20:40:22,245 INFO L226 Difference]: Without dead ends: 553 [2023-11-23 20:40:22,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,258 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 700 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 736 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:40:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-23 20:40:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-11-23 20:40:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 383 states have (on average 1.3577023498694516) internal successors, (520), 391 states have internal predecessors, (520), 142 states have call successors, (142), 28 states have call predecessors, (142), 27 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2023-11-23 20:40:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 799 transitions. [2023-11-23 20:40:22,392 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 799 transitions. Word has length 12 [2023-11-23 20:40:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,393 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 799 transitions. [2023-11-23 20:40:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 799 transitions. [2023-11-23 20:40:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:40:22,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:22,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1668856718, now seen corresponding path program 1 times [2023-11-23 20:40:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108623893] [2023-11-23 20:40:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:22,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108623893] [2023-11-23 20:40:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108623893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766137707] [2023-11-23 20:40:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,609 INFO L87 Difference]: Start difference. First operand 553 states and 799 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,917 INFO L93 Difference]: Finished difference Result 1068 states and 1545 transitions. [2023-11-23 20:40:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 20:40:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,924 INFO L225 Difference]: With dead ends: 1068 [2023-11-23 20:40:22,925 INFO L226 Difference]: Without dead ends: 553 [2023-11-23 20:40:22,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,929 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 729 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 632 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-23 20:40:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-11-23 20:40:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 383 states have (on average 1.3550913838120104) internal successors, (519), 391 states have internal predecessors, (519), 142 states have call successors, (142), 28 states have call predecessors, (142), 27 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2023-11-23 20:40:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 798 transitions. [2023-11-23 20:40:22,994 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 798 transitions. Word has length 18 [2023-11-23 20:40:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,995 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 798 transitions. [2023-11-23 20:40:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 798 transitions. [2023-11-23 20:40:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 20:40:23,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:23,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:23,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:23,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1010226544, now seen corresponding path program 1 times [2023-11-23 20:40:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852366800] [2023-11-23 20:40:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:23,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852366800] [2023-11-23 20:40:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852366800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832066445] [2023-11-23 20:40:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:23,246 INFO L87 Difference]: Start difference. First operand 553 states and 798 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:40:23,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:23,650 INFO L93 Difference]: Finished difference Result 1070 states and 1546 transitions. [2023-11-23 20:40:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:23,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-23 20:40:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:23,655 INFO L225 Difference]: With dead ends: 1070 [2023-11-23 20:40:23,656 INFO L226 Difference]: Without dead ends: 555 [2023-11-23 20:40:23,657 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 [2023-11-23 20:40:23,659 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 0 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:23,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1263 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:40:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-23 20:40:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2023-11-23 20:40:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 385 states have (on average 1.3532467532467531) internal successors, (521), 393 states have internal predecessors, (521), 142 states have call successors, (142), 28 states have call predecessors, (142), 27 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2023-11-23 20:40:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 800 transitions. [2023-11-23 20:40:23,703 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 800 transitions. Word has length 29 [2023-11-23 20:40:23,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:23,703 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 800 transitions. [2023-11-23 20:40:23,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:40:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 800 transitions. [2023-11-23 20:40:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:40:23,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:23,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:23,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:23,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash 608072491, now seen corresponding path program 1 times [2023-11-23 20:40:23,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963993516] [2023-11-23 20:40:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:24,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963993516] [2023-11-23 20:40:24,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963993516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:24,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847956108] [2023-11-23 20:40:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:24,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:24,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:24,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:24,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92f2accc-f40a-47b0-8602-411d0be20032/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:40:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:24,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:40:24,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:24,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:40:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847956108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:40:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519382025] [2023-11-23 20:40:24,511 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-23 20:40:24,511 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:40:24,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:40:24,520 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:40:24,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:40:54,897 INFO L197 IcfgInterpreter]: Interpreting procedure kzalloc with input of size 124 for LOIs [2023-11-23 20:40:56,055 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 129 for LOIs [2023-11-23 20:40:56,251 INFO L180 IcfgInterpreter]: Interpretation finished