./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3b9005361fd0095f8dbb62f5fee3acdc88198cbc01de43b11979176397f6891 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 06:17:51,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 06:17:51,132 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-06 06:17:51,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 06:17:51,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 06:17:51,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 06:17:51,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 06:17:51,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 06:17:51,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 06:17:51,162 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 06:17:51,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 06:17:51,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 06:17:51,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 06:17:51,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 06:17:51,163 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 06:17:51,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 06:17:51,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 06:17:51,165 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 06:17:51,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 06:17:51,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 06:17:51,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 06:17:51,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 06:17:51,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 06:17:51,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 06:17:51,166 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> e3b9005361fd0095f8dbb62f5fee3acdc88198cbc01de43b11979176397f6891 [2025-02-06 06:17:51,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 06:17:51,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 06:17:51,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 06:17:51,439 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 06:17:51,439 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 06:17:51,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-02-06 06:17:52,671 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bcec55466/3b8545cf18364ed48e08a27749eec91b/FLAG32dd9ba68 [2025-02-06 06:17:53,082 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 06:17:53,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-02-06 06:17:53,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bcec55466/3b8545cf18364ed48e08a27749eec91b/FLAG32dd9ba68 [2025-02-06 06:17:53,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bcec55466/3b8545cf18364ed48e08a27749eec91b [2025-02-06 06:17:53,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 06:17:53,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 06:17:53,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 06:17:53,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 06:17:53,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 06:17:53,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:17:53" (1/1) ... [2025-02-06 06:17:53,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106b3bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:53, skipping insertion in model container [2025-02-06 06:17:53,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:17:53" (1/1) ... [2025-02-06 06:17:53,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 06:17:54,347 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i[228448,228461] [2025-02-06 06:17:54,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 06:17:54,423 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 06:17:54,616 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7332] [2025-02-06 06:17:54,635 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i[228448,228461] [2025-02-06 06:17:54,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 06:17:54,694 INFO L204 MainTranslator]: Completed translation [2025-02-06 06:17:54,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54 WrapperNode [2025-02-06 06:17:54,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 06:17:54,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 06:17:54,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 06:17:54,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 06:17:54,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,799 INFO L138 Inliner]: procedures = 188, calls = 659, calls flagged for inlining = 74, calls inlined = 49, statements flattened = 1340 [2025-02-06 06:17:54,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 06:17:54,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 06:17:54,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 06:17:54,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 06:17:54,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,899 INFO L175 MemorySlicer]: Split 204 memory accesses to 8 slices as follows [2, 9, 115, 5, 12, 21, 8, 32]. 56 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 9, 54, 0, 12, 0, 0, 4]. The 38 writes are split as follows [0, 0, 9, 0, 0, 1, 0, 28]. [2025-02-06 06:17:54,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 06:17:54,972 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 06:17:54,972 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 06:17:54,972 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 06:17:54,973 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (1/1) ... [2025-02-06 06:17:54,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 06:17:54,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 06:17:55,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 06:17:55,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 06:17:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2025-02-06 06:17:55,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2025-02-06 06:17:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure uspace_ring_map [2025-02-06 06:17:55,029 INFO L138 BoogieDeclarations]: Found implementation of procedure uspace_ring_map [2025-02-06 06:17:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unmap_user_pages [2025-02-06 06:17:55,030 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unmap_user_pages [2025-02-06 06:17:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-06 06:17:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-06 06:17:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-06 06:17:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-06 06:17:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-06 06:17:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure hash_64 [2025-02-06 06:17:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_64 [2025-02-06 06:17:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_release_buffers [2025-02-06 06:17:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_release_buffers [2025-02-06 06:17:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-02-06 06:17:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-02-06 06:17:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2025-02-06 06:17:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2025-02-06 06:17:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_write [2025-02-06 06:17:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_write [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_open [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_open [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_to_host [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_to_host [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_idx_inc [2025-02-06 06:17:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_idx_inc [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-06 06:17:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_head_event [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_head_event [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_exit [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_exit [2025-02-06 06:17:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-02-06 06:17:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-02-06 06:17:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_destroy [2025-02-06 06:17:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_destroy [2025-02-06 06:17:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_init [2025-02-06 06:17:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_init [2025-02-06 06:17:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2025-02-06 06:17:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2025-02-06 06:17:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2025-02-06 06:17:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2025-02-06 06:17:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_poll [2025-02-06 06:17:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_poll [2025-02-06 06:17:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2025-02-06 06:17:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2025-02-06 06:17:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_lookup [2025-02-06 06:17:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_lookup [2025-02-06 06:17:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_mmap [2025-02-06 06:17:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_mmap [2025-02-06 06:17:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 06:17:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 06:17:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2025-02-06 06:17:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2025-02-06 06:17:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 06:17:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 06:17:55,351 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 06:17:55,352 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 06:17:55,428 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8347: havoc vm_insert_page_#t~nondet448#1; [2025-02-06 06:17:55,428 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8213: havoc __phys_addr_#t~nondet427#1; [2025-02-06 06:17:55,442 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7298: havoc #t~mem304; [2025-02-06 06:17:55,450 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8259: havoc blk_rq_unmap_user_#t~nondet434#1; [2025-02-06 06:17:55,480 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6474: havoc #t~bitwise81; [2025-02-06 06:17:55,499 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6379: havoc ~res~0#1.base, ~res~0#1.offset; [2025-02-06 06:17:55,513 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint tgt_ring_exitFINAL: assume true; [2025-02-06 06:17:55,516 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8323: havoc #t~nondet444; [2025-02-06 06:17:55,812 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8255: havoc blk_rq_map_user_#t~nondet433#1; [2025-02-06 06:17:55,813 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8340: havoc scsi_init_io_#t~nondet447#1; [2025-02-06 06:17:55,813 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6451: havoc blk_rq_bytes_#t~mem77#1; [2025-02-06 06:17:55,830 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7613: call ULTIMATE.dealloc(~#__key~3#1.base, ~#__key~3#1.offset);havoc ~#__key~3#1.base, ~#__key~3#1.offset; [2025-02-06 06:17:55,830 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8272: havoc get_zeroed_page_#t~nondet436#1; [2025-02-06 06:17:55,865 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8236: havoc #t~nondet431; [2025-02-06 06:17:55,879 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8333: havoc #t~ret446.base, #t~ret446.offset; [2025-02-06 06:17:55,896 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8232: havoc #t~nondet430; [2025-02-06 06:17:57,484 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8319: havoc noop_llseek_#t~nondet443#1; [2025-02-06 06:17:57,484 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7072: call ULTIMATE.dealloc(scsi_tgt_init_~#__key~2#1.base, scsi_tgt_init_~#__key~2#1.offset);havoc scsi_tgt_init_~#__key~2#1.base, scsi_tgt_init_~#__key~2#1.offset; [2025-02-06 06:17:57,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8278: havoc kmem_cache_create_#t~ret438#1.base, kmem_cache_create_#t~ret438#1.offset; [2025-02-06 06:17:57,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8197: havoc __alloc_workqueue_key_#t~ret426#1.base, __alloc_workqueue_key_#t~ret426#1.offset; [2025-02-06 06:17:57,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8288: havoc ldv_tgt_fops_release_1_#t~nondet439#1; [2025-02-06 06:17:57,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8305: havoc misc_register_#t~nondet441#1; [2025-02-06 06:17:57,485 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8301: havoc misc_deregister_#t~nondet440#1; [2025-02-06 06:17:57,490 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6769: havoc #t~mem152.base, #t~mem152.offset; [2025-02-06 06:17:57,640 INFO L? ?]: Removed 641 outVars from TransFormulas that were not future-live. [2025-02-06 06:17:57,640 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 06:17:57,670 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 06:17:57,671 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 06:17:57,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:17:57 BoogieIcfgContainer [2025-02-06 06:17:57,671 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 06:17:57,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 06:17:57,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 06:17:57,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 06:17:57,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:17:53" (1/3) ... [2025-02-06 06:17:57,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec7477c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:17:57, skipping insertion in model container [2025-02-06 06:17:57,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:17:54" (2/3) ... [2025-02-06 06:17:57,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec7477c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:17:57, skipping insertion in model container [2025-02-06 06:17:57,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:17:57" (3/3) ... [2025-02-06 06:17:57,684 INFO L128 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-02-06 06:17:57,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 06:17:57,698 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i that has 32 procedures, 413 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 06:17:57,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 06:17:57,768 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=PETRI_NET, 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;@be1151a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 06:17:57,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 06:17:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 296 states have (on average 1.2939189189189189) internal successors, (383), 305 states have internal predecessors, (383), 83 states have call successors, (83), 31 states have call predecessors, (83), 30 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2025-02-06 06:17:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 06:17:57,783 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 06:17:57,784 INFO L218 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] [2025-02-06 06:17:57,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 06:17:57,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 06:17:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1686447415, now seen corresponding path program 1 times [2025-02-06 06:17:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 06:17:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801174543] [2025-02-06 06:17:57,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 06:17:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 06:17:58,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 06:17:58,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 06:17:58,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 06:17:58,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 06:17:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 06:17:58,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 06:17:58,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801174543] [2025-02-06 06:17:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801174543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 06:17:58,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 06:17:58,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 06:17:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753256002] [2025-02-06 06:17:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 06:17:58,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 06:17:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 06:17:58,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 06:17:58,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 06:17:58,496 INFO L87 Difference]: Start difference. First operand has 413 states, 296 states have (on average 1.2939189189189189) internal successors, (383), 305 states have internal predecessors, (383), 83 states have call successors, (83), 31 states have call predecessors, (83), 30 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:17:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 06:17:59,005 INFO L93 Difference]: Finished difference Result 821 states and 1102 transitions. [2025-02-06 06:17:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 06:17:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2025-02-06 06:17:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 06:17:59,020 INFO L225 Difference]: With dead ends: 821 [2025-02-06 06:17:59,021 INFO L226 Difference]: Without dead ends: 400 [2025-02-06 06:17:59,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 06:17:59,031 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 16 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 06:17:59,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1565 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 06:17:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2025-02-06 06:17:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 391. [2025-02-06 06:17:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 284 states have (on average 1.2746478873239437) internal successors, (362), 289 states have internal predecessors, (362), 77 states have call successors, (77), 30 states have call predecessors, (77), 29 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2025-02-06 06:17:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 513 transitions. [2025-02-06 06:17:59,101 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 513 transitions. Word has length 25 [2025-02-06 06:17:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 06:17:59,104 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 513 transitions. [2025-02-06 06:17:59,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:17:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 513 transitions. [2025-02-06 06:17:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 06:17:59,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 06:17:59,105 INFO L218 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] [2025-02-06 06:17:59,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 06:17:59,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 06:17:59,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 06:17:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1657818264, now seen corresponding path program 1 times [2025-02-06 06:17:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 06:17:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788457116] [2025-02-06 06:17:59,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 06:17:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 06:17:59,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 06:17:59,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 06:17:59,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 06:17:59,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 06:17:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 06:17:59,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 06:17:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788457116] [2025-02-06 06:17:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788457116] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 06:17:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 06:17:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 06:17:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188122560] [2025-02-06 06:17:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 06:17:59,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 06:17:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 06:17:59,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 06:17:59,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 06:17:59,321 INFO L87 Difference]: Start difference. First operand 391 states and 513 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:17:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 06:17:59,743 INFO L93 Difference]: Finished difference Result 393 states and 514 transitions. [2025-02-06 06:17:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 06:17:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2025-02-06 06:17:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 06:17:59,746 INFO L225 Difference]: With dead ends: 393 [2025-02-06 06:17:59,746 INFO L226 Difference]: Without dead ends: 390 [2025-02-06 06:17:59,747 INFO L434 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 [2025-02-06 06:17:59,747 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 490 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 06:17:59,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 505 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 06:17:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-02-06 06:17:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2025-02-06 06:17:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 284 states have (on average 1.2711267605633803) internal successors, (361), 288 states have internal predecessors, (361), 76 states have call successors, (76), 30 states have call predecessors, (76), 29 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2025-02-06 06:17:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 511 transitions. [2025-02-06 06:17:59,766 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 511 transitions. Word has length 25 [2025-02-06 06:17:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 06:17:59,767 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 511 transitions. [2025-02-06 06:17:59,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:17:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 511 transitions. [2025-02-06 06:17:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 06:17:59,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 06:17:59,768 INFO L218 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] [2025-02-06 06:17:59,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 06:17:59,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 06:17:59,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 06:17:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash 146901825, now seen corresponding path program 1 times [2025-02-06 06:17:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 06:17:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878587813] [2025-02-06 06:17:59,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 06:17:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 06:17:59,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 06:17:59,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 06:17:59,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 06:17:59,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 06:17:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 06:17:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 06:17:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878587813] [2025-02-06 06:17:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878587813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 06:17:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 06:17:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 06:17:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915402727] [2025-02-06 06:17:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 06:17:59,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 06:17:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 06:17:59,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 06:17:59,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 06:17:59,981 INFO L87 Difference]: Start difference. First operand 390 states and 511 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:18:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 06:18:00,429 INFO L93 Difference]: Finished difference Result 392 states and 512 transitions. [2025-02-06 06:18:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 06:18:00,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-02-06 06:18:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 06:18:00,434 INFO L225 Difference]: With dead ends: 392 [2025-02-06 06:18:00,434 INFO L226 Difference]: Without dead ends: 389 [2025-02-06 06:18:00,434 INFO L434 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 [2025-02-06 06:18:00,435 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 487 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 06:18:00,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 503 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 06:18:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-02-06 06:18:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2025-02-06 06:18:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 284 states have (on average 1.267605633802817) internal successors, (360), 287 states have internal predecessors, (360), 75 states have call successors, (75), 30 states have call predecessors, (75), 29 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2025-02-06 06:18:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 509 transitions. [2025-02-06 06:18:00,468 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 509 transitions. Word has length 26 [2025-02-06 06:18:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 06:18:00,469 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 509 transitions. [2025-02-06 06:18:00,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:18:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 509 transitions. [2025-02-06 06:18:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 06:18:00,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 06:18:00,470 INFO L218 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] [2025-02-06 06:18:00,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 06:18:00,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 06:18:00,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 06:18:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash 258648713, now seen corresponding path program 1 times [2025-02-06 06:18:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 06:18:00,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063556310] [2025-02-06 06:18:00,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 06:18:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 06:18:00,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 06:18:00,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 06:18:00,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 06:18:00,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 06:18:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 06:18:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 06:18:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063556310] [2025-02-06 06:18:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063556310] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 06:18:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 06:18:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 06:18:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774396111] [2025-02-06 06:18:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 06:18:00,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 06:18:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 06:18:00,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 06:18:00,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 06:18:00,624 INFO L87 Difference]: Start difference. First operand 389 states and 509 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:18:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 06:18:01,146 INFO L93 Difference]: Finished difference Result 389 states and 509 transitions. [2025-02-06 06:18:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 06:18:01,148 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2025-02-06 06:18:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 06:18:01,148 INFO L225 Difference]: With dead ends: 389 [2025-02-06 06:18:01,149 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 06:18:01,149 INFO L434 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 [2025-02-06 06:18:01,150 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 483 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 06:18:01,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 501 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 06:18:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 06:18:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 06:18:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 06:18:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 06:18:01,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2025-02-06 06:18:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 06:18:01,151 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 06:18:01,151 INFO L472 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 06:18:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 06:18:01,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 06:18:01,154 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-06 06:18:01,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 06:18:01,157 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 06:18:01,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-06 06:18:02,638 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 06:18:02,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:18:02 BoogieIcfgContainer [2025-02-06 06:18:02,643 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 06:18:02,643 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 06:18:02,643 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 06:18:02,644 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 06:18:02,644 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:17:57" (3/4) ... [2025-02-06 06:18:02,645 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 06:18:02,649 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_idx_inc [2025-02-06 06:18:02,649 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __raw_spin_lock_init [2025-02-06 06:18:02,649 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_exit [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure uspace_ring_map [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure printk [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_destroy [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_write [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_init [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_error [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_del [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_free [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_head_event [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_poll [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_unmap_user_pages [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _raw_spin_lock_irqsave [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_put [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure hash_64 [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~int [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv__builtin_expect [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_open [2025-02-06 06:18:02,650 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_lookup [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_mmap [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_release_buffers [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_destroy [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spin_unlock_irqrestore [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure destroy_workqueue [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _copy_from_user [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_add [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_to_host [2025-02-06 06:18:02,651 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spinlock_check [2025-02-06 06:18:02,671 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 156 nodes and edges [2025-02-06 06:18:02,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2025-02-06 06:18:02,673 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-06 06:18:02,675 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-06 06:18:02,676 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 06:18:02,677 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 06:18:02,799 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 06:18:02,799 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 06:18:02,799 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 06:18:02,801 INFO L158 Benchmark]: Toolchain (without parser) took 9677.28ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 103.0MB in the beginning and 234.3MB in the end (delta: -131.3MB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,802 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 06:18:02,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1571.79ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 103.0MB in the beginning and 352.7MB in the end (delta: -249.7MB). Peak memory consumption was 101.3MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.69ms. Allocated memory is still 427.8MB. Free memory was 352.7MB in the beginning and 343.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,804 INFO L158 Benchmark]: Boogie Preprocessor took 169.79ms. Allocated memory is still 427.8MB. Free memory was 343.5MB in the beginning and 319.2MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,804 INFO L158 Benchmark]: IcfgBuilder took 2699.01ms. Allocated memory is still 427.8MB. Free memory was 318.4MB in the beginning and 193.3MB in the end (delta: 125.1MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,804 INFO L158 Benchmark]: TraceAbstraction took 4970.10ms. Allocated memory is still 427.8MB. Free memory was 192.5MB in the beginning and 255.2MB in the end (delta: -62.7MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,804 INFO L158 Benchmark]: Witness Printer took 155.95ms. Allocated memory is still 427.8MB. Free memory was 255.2MB in the beginning and 234.3MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 06:18:02,805 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1571.79ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 103.0MB in the beginning and 352.7MB in the end (delta: -249.7MB). Peak memory consumption was 101.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.69ms. Allocated memory is still 427.8MB. Free memory was 352.7MB in the beginning and 343.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 169.79ms. Allocated memory is still 427.8MB. Free memory was 343.5MB in the beginning and 319.2MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * IcfgBuilder took 2699.01ms. Allocated memory is still 427.8MB. Free memory was 318.4MB in the beginning and 193.3MB in the end (delta: 125.1MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4970.10ms. Allocated memory is still 427.8MB. Free memory was 192.5MB in the beginning and 255.2MB in the end (delta: -62.7MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. * Witness Printer took 155.95ms. Allocated memory is still 427.8MB. Free memory was 255.2MB in the beginning and 234.3MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 7332]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7332] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7845]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 32 procedures, 413 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1476 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1476 mSDsluCounter, 3074 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1041 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2033 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 06:18:02,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE