./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/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/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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-?-e2fb8be-m [2025-03-08 19:06:06,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 19:06:06,774 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 19:06:06,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 19:06:06,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 19:06:06,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 19:06:06,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 19:06:06,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 19:06:06,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 19:06:06,806 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 19:06:06,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 19:06:06,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 19:06:06,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 19:06:06,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 19:06:06,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 19:06:06,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 19:06:06,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 19:06:06,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 19:06:06,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 19:06:06,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 19:06:06,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 19:06:06,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 19:06:06,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 19:06:06,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 19:06:06,810 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/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 [2025-03-08 19:06:07,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 19:06:07,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 19:06:07,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 19:06:07,053 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 19:06:07,053 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 19:06:07,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-08 19:06:08,193 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e95b6066/3d2dd19686604b159ae31398cc035dee/FLAGe328a3ee3 [2025-03-08 19:06:08,597 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 19:06:08,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-08 19:06:08,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e95b6066/3d2dd19686604b159ae31398cc035dee/FLAGe328a3ee3 [2025-03-08 19:06:08,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e95b6066/3d2dd19686604b159ae31398cc035dee [2025-03-08 19:06:08,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 19:06:08,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 19:06:08,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 19:06:08,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 19:06:08,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 19:06:08,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:06:08" (1/1) ... [2025-03-08 19:06:08,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190c45b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:08, skipping insertion in model container [2025-03-08 19:06:08,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:06:08" (1/1) ... [2025-03-08 19:06:08,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 19:06:10,061 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/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] [2025-03-08 19:06:10,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 19:06:10,166 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 19:06:10,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7332] [2025-03-08 19:06:10,372 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/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] [2025-03-08 19:06:10,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 19:06:10,426 INFO L204 MainTranslator]: Completed translation [2025-03-08 19:06:10,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10 WrapperNode [2025-03-08 19:06:10,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 19:06:10,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 19:06:10,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 19:06:10,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 19:06:10,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,521 INFO L138 Inliner]: procedures = 188, calls = 659, calls flagged for inlining = 74, calls inlined = 49, statements flattened = 1340 [2025-03-08 19:06:10,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 19:06:10,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 19:06:10,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 19:06:10,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 19:06:10,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,640 INFO L175 MemorySlicer]: Split 204 memory accesses to 8 slices as follows [115, 2, 32, 12, 21, 9, 8, 5]. 56 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [54, 2, 4, 12, 0, 9, 0, 0]. The 38 writes are split as follows [9, 0, 28, 0, 1, 0, 0, 0]. [2025-03-08 19:06:10,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,682 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 19:06:10,726 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 19:06:10,726 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 19:06:10,727 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 19:06:10,728 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (1/1) ... [2025-03-08 19:06:10,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 19:06:10,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 19:06:10,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 19:06:10,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2025-03-08 19:06:10,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure uspace_ring_map [2025-03-08 19:06:10,772 INFO L138 BoogieDeclarations]: Found implementation of procedure uspace_ring_map [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unmap_user_pages [2025-03-08 19:06:10,772 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unmap_user_pages [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 19:06:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure hash_64 [2025-03-08 19:06:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_64 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_release_buffers [2025-03-08 19:06:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_release_buffers [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-08 19:06:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2025-03-08 19:06:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_write [2025-03-08 19:06:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_write [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 19:06:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_open [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_open [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_to_host [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_to_host [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_idx_inc [2025-03-08 19:06:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_idx_inc [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 19:06:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_head_event [2025-03-08 19:06:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_head_event [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2025-03-08 19:06:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2025-03-08 19:06:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 19:06:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2025-03-08 19:06:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-03-08 19:06:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_exit [2025-03-08 19:06:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_exit [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-03-08 19:06:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-03-08 19:06:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_destroy [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_destroy [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_init [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_init [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_poll [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_poll [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_lookup [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_lookup [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_mmap [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_mmap [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2025-03-08 19:06:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 19:06:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 19:06:11,040 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 19:06:11,042 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 19:06:11,118 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8347: havoc vm_insert_page_#t~nondet448#1; [2025-03-08 19:06:11,119 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8213: havoc __phys_addr_#t~nondet427#1; [2025-03-08 19:06:11,128 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7298: havoc #t~mem304; [2025-03-08 19:06:11,139 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8259: havoc blk_rq_unmap_user_#t~nondet434#1; [2025-03-08 19:06:11,183 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6474: havoc #t~bitwise81; [2025-03-08 19:06:11,214 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6379: havoc ~res~0#1.base, ~res~0#1.offset; [2025-03-08 19:06:11,236 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8323: havoc #t~nondet444; [2025-03-08 19:06:11,545 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8255: havoc blk_rq_map_user_#t~nondet433#1; [2025-03-08 19:06:11,545 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8340: havoc scsi_init_io_#t~nondet447#1; [2025-03-08 19:06:11,545 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6451: havoc blk_rq_bytes_#t~mem77#1; [2025-03-08 19:06:11,563 INFO L1307 $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; [2025-03-08 19:06:11,563 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8272: havoc get_zeroed_page_#t~nondet436#1; [2025-03-08 19:06:11,602 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8236: havoc #t~nondet431; [2025-03-08 19:06:11,616 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8333: havoc #t~ret446.base, #t~ret446.offset; [2025-03-08 19:06:11,640 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8232: havoc #t~nondet430; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8319: havoc noop_llseek_#t~nondet443#1; [2025-03-08 19:06:12,539 INFO L1307 $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; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8278: havoc kmem_cache_create_#t~ret438#1.base, kmem_cache_create_#t~ret438#1.offset; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8197: havoc __alloc_workqueue_key_#t~ret426#1.base, __alloc_workqueue_key_#t~ret426#1.offset; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8288: havoc ldv_tgt_fops_release_1_#t~nondet439#1; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8305: havoc misc_register_#t~nondet441#1; [2025-03-08 19:06:12,539 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8301: havoc misc_deregister_#t~nondet440#1; [2025-03-08 19:06:12,544 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6769: havoc #t~mem152.base, #t~mem152.offset; [2025-03-08 19:06:12,701 INFO L? ?]: Removed 641 outVars from TransFormulas that were not future-live. [2025-03-08 19:06:12,701 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 19:06:12,730 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 19:06:12,730 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-08 19:06:12,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:06:12 BoogieIcfgContainer [2025-03-08 19:06:12,730 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 19:06:12,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 19:06:12,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 19:06:12,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 19:06:12,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:06:08" (1/3) ... [2025-03-08 19:06:12,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2941cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:06:12, skipping insertion in model container [2025-03-08 19:06:12,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:06:10" (2/3) ... [2025-03-08 19:06:12,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2941cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:06:12, skipping insertion in model container [2025-03-08 19:06:12,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:06:12" (3/3) ... [2025-03-08 19:06:12,739 INFO L128 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-08 19:06:12,756 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 19:06:12,760 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. [2025-03-08 19:06:12,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 19:06:12,839 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;@29078915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 19:06:12,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 19:06:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 297 states have (on average 1.292929292929293) internal successors, (384), 305 states have internal predecessors, (384), 83 states have call successors, (83), 31 states have call predecessors, (83), 31 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2025-03-08 19:06:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 19:06:12,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:06:12,856 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] [2025-03-08 19:06:12,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:06:12,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:06:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1686447415, now seen corresponding path program 1 times [2025-03-08 19:06:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:06:12,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069117323] [2025-03-08 19:06:12,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:06:12,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:06:13,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 19:06:13,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 19:06:13,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:06:13,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:06:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 19:06:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:06:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069117323] [2025-03-08 19:06:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069117323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:06:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:06:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 19:06:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060216192] [2025-03-08 19:06:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:06:13,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 19:06:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:06:13,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 19:06:13,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 19:06:13,504 INFO L87 Difference]: Start difference. First operand has 413 states, 297 states have (on average 1.292929292929293) internal successors, (384), 305 states have internal predecessors, (384), 83 states have call successors, (83), 31 states have call predecessors, (83), 31 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) 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) [2025-03-08 19:06:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:06:14,058 INFO L93 Difference]: Finished difference Result 837 states and 1130 transitions. [2025-03-08 19:06:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 19:06:14,060 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 [2025-03-08 19:06:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:06:14,068 INFO L225 Difference]: With dead ends: 837 [2025-03-08 19:06:14,068 INFO L226 Difference]: Without dead ends: 419 [2025-03-08 19:06:14,075 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 [2025-03-08 19:06:14,078 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 16 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 19:06:14,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1607 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 19:06:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-03-08 19:06:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 410. [2025-03-08 19:06:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 296 states have (on average 1.2804054054054055) internal successors, (379), 302 states have internal predecessors, (379), 83 states have call successors, (83), 31 states have call predecessors, (83), 30 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 19:06:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 542 transitions. [2025-03-08 19:06:14,149 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 542 transitions. Word has length 25 [2025-03-08 19:06:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:06:14,150 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 542 transitions. [2025-03-08 19:06:14,150 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) [2025-03-08 19:06:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 542 transitions. [2025-03-08 19:06:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 19:06:14,156 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:06:14,156 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] [2025-03-08 19:06:14,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 19:06:14,156 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:06:14,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:06:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1657818264, now seen corresponding path program 1 times [2025-03-08 19:06:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:06:14,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189390918] [2025-03-08 19:06:14,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:06:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:06:14,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 19:06:14,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 19:06:14,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:06:14,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:06:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 19:06:14,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:06:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189390918] [2025-03-08 19:06:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189390918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:06:14,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:06:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:06:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735922545] [2025-03-08 19:06:14,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:06:14,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:06:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:06:14,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:06:14,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:06:14,406 INFO L87 Difference]: Start difference. First operand 410 states and 542 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) [2025-03-08 19:06:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:06:14,850 INFO L93 Difference]: Finished difference Result 412 states and 543 transitions. [2025-03-08 19:06:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:06:14,850 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 [2025-03-08 19:06:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:06:14,853 INFO L225 Difference]: With dead ends: 412 [2025-03-08 19:06:14,853 INFO L226 Difference]: Without dead ends: 409 [2025-03-08 19:06:14,854 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 [2025-03-08 19:06:14,854 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 534 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 [2025-03-08 19:06:14,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 534 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 19:06:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2025-03-08 19:06:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2025-03-08 19:06:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 296 states have (on average 1.277027027027027) internal successors, (378), 301 states have internal predecessors, (378), 82 states have call successors, (82), 31 states have call predecessors, (82), 30 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 19:06:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 540 transitions. [2025-03-08 19:06:14,875 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 540 transitions. Word has length 25 [2025-03-08 19:06:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:06:14,875 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 540 transitions. [2025-03-08 19:06:14,875 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) [2025-03-08 19:06:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 540 transitions. [2025-03-08 19:06:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 19:06:14,915 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:06:14,915 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] [2025-03-08 19:06:14,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 19:06:14,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:06:14,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:06:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 146901825, now seen corresponding path program 1 times [2025-03-08 19:06:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:06:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160296757] [2025-03-08 19:06:14,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:06:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:06:15,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 19:06:15,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 19:06:15,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:06:15,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:06:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 19:06:15,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:06:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160296757] [2025-03-08 19:06:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160296757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:06:15,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:06:15,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:06:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582235915] [2025-03-08 19:06:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:06:15,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:06:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:06:15,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:06:15,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:06:15,083 INFO L87 Difference]: Start difference. First operand 409 states and 540 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) [2025-03-08 19:06:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:06:15,540 INFO L93 Difference]: Finished difference Result 411 states and 541 transitions. [2025-03-08 19:06:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:06:15,540 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 [2025-03-08 19:06:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:06:15,543 INFO L225 Difference]: With dead ends: 411 [2025-03-08 19:06:15,543 INFO L226 Difference]: Without dead ends: 408 [2025-03-08 19:06:15,543 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 [2025-03-08 19:06:15,545 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 516 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 532 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 [2025-03-08 19:06:15,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 532 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 19:06:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-03-08 19:06:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2025-03-08 19:06:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 296 states have (on average 1.2736486486486487) internal successors, (377), 300 states have internal predecessors, (377), 81 states have call successors, (81), 31 states have call predecessors, (81), 30 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-03-08 19:06:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 538 transitions. [2025-03-08 19:06:15,576 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 538 transitions. Word has length 26 [2025-03-08 19:06:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:06:15,576 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 538 transitions. [2025-03-08 19:06:15,576 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) [2025-03-08 19:06:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 538 transitions. [2025-03-08 19:06:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-08 19:06:15,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:06:15,578 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] [2025-03-08 19:06:15,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 19:06:15,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:06:15,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:06:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash 258648713, now seen corresponding path program 1 times [2025-03-08 19:06:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:06:15,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127041763] [2025-03-08 19:06:15,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:06:15,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:06:15,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 19:06:15,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 19:06:15,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:06:15,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:06:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 19:06:15,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:06:15,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127041763] [2025-03-08 19:06:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127041763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:06:15,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:06:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:06:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189047293] [2025-03-08 19:06:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:06:15,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:06:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:06:15,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:06:15,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:06:15,741 INFO L87 Difference]: Start difference. First operand 408 states and 538 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) [2025-03-08 19:06:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:06:16,222 INFO L93 Difference]: Finished difference Result 408 states and 538 transitions. [2025-03-08 19:06:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:06:16,223 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 [2025-03-08 19:06:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:06:16,224 INFO L225 Difference]: With dead ends: 408 [2025-03-08 19:06:16,224 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 19:06:16,225 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 [2025-03-08 19:06:16,226 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 19:06:16,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 530 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 19:06:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 19:06:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 19:06:16,228 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) [2025-03-08 19:06:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 19:06:16,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2025-03-08 19:06:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:06:16,228 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 19:06:16,228 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) [2025-03-08 19:06:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 19:06:16,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 19:06:16,233 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 19:06:16,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 19:06:16,235 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-08 19:06:16,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 19:06:17,645 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 19:06:17,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 07:06:17 BoogieIcfgContainer [2025-03-08 19:06:17,650 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 19:06:17,650 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 19:06:17,650 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 19:06:17,650 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 19:06:17,651 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:06:12" (3/4) ... [2025-03-08 19:06:17,652 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_idx_inc [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __raw_spin_lock_init [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_exit [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure uspace_ring_map [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure printk [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_destroy [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_write [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_init [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_error [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_del [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_free [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_head_event [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_poll [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_unmap_user_pages [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _raw_spin_lock_irqsave [2025-03-08 19:06:17,656 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_put [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure hash_64 [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~int [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv__builtin_expect [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_open [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_lookup [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_mmap [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_release_buffers [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_destroy [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spin_unlock_irqrestore [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure destroy_workqueue [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _copy_from_user [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_add [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_to_host [2025-03-08 19:06:17,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spinlock_check [2025-03-08 19:06:17,669 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 157 nodes and edges [2025-03-08 19:06:17,671 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2025-03-08 19:06:17,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-08 19:06:17,673 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-08 19:06:17,675 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-08 19:06:17,676 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 19:06:17,789 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 19:06:17,790 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 19:06:17,790 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 19:06:17,791 INFO L158 Benchmark]: Toolchain (without parser) took 9035.33ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 102.1MB in the beginning and 209.4MB in the end (delta: -107.3MB). Peak memory consumption was 174.3MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,791 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 19:06:17,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1672.22ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 102.1MB in the beginning and 352.5MB in the end (delta: -250.5MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.25ms. Allocated memory is still 427.8MB. Free memory was 352.5MB in the beginning and 343.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,791 INFO L158 Benchmark]: Boogie Preprocessor took 202.45ms. Allocated memory is still 427.8MB. Free memory was 343.6MB in the beginning and 316.4MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,791 INFO L158 Benchmark]: IcfgBuilder took 2004.22ms. Allocated memory is still 427.8MB. Free memory was 316.4MB in the beginning and 191.3MB in the end (delta: 125.0MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,792 INFO L158 Benchmark]: TraceAbstraction took 4917.35ms. Allocated memory is still 427.8MB. Free memory was 190.5MB in the beginning and 234.3MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 19:06:17,792 INFO L158 Benchmark]: Witness Printer took 139.97ms. Allocated memory is still 427.8MB. Free memory was 234.3MB in the beginning and 209.4MB in the end (delta: 24.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 19:06:17,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1672.22ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 102.1MB in the beginning and 352.5MB in the end (delta: -250.5MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.25ms. Allocated memory is still 427.8MB. Free memory was 352.5MB in the beginning and 343.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 202.45ms. Allocated memory is still 427.8MB. Free memory was 343.6MB in the beginning and 316.4MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * IcfgBuilder took 2004.22ms. Allocated memory is still 427.8MB. Free memory was 316.4MB in the beginning and 191.3MB in the end (delta: 125.0MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4917.35ms. Allocated memory is still 427.8MB. Free memory was 190.5MB in the beginning and 234.3MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 139.97ms. Allocated memory is still 427.8MB. Free memory was 234.3MB in the beginning and 209.4MB in the end (delta: 24.9MB). Peak memory consumption was 16.8MB. 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, 633 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1563 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1563 mSDsluCounter, 3203 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1069 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2134 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, 0.4s 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! [2025-03-08 19:06:17,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE