./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 798a7b37 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-?-798a7b3-m [2025-03-04 03:54:30,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 03:54:30,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 03:54:30,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 03:54:30,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 03:54:30,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 03:54:30,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 03:54:30,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 03:54:30,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 03:54:30,453 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 03:54:30,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 03:54:30,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 03:54:30,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 03:54:30,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 03:54:30,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 03:54:30,456 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:54:30,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 03:54:30,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 03:54:30,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 03:54:30,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 03:54:30,458 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 [2025-03-04 03:54:30,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 03:54:30,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 03:54:30,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 03:54:30,701 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 03:54:30,701 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 03:54:30,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-04 03:54:31,858 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4342ac7/032e07613ce34ab2ab3fa33e6bbfd5af/FLAG7b95087e3 [2025-03-04 03:54:32,443 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 03:54:32,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-04 03:54:32,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4342ac7/032e07613ce34ab2ab3fa33e6bbfd5af/FLAG7b95087e3 [2025-03-04 03:54:32,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4342ac7/032e07613ce34ab2ab3fa33e6bbfd5af [2025-03-04 03:54:32,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 03:54:32,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 03:54:32,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 03:54:32,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 03:54:32,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 03:54:32,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:54:32" (1/1) ... [2025-03-04 03:54:32,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688838fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:32, skipping insertion in model container [2025-03-04 03:54:32,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:54:32" (1/1) ... [2025-03-04 03:54:33,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 03:54:33,925 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] [2025-03-04 03:54:34,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:54:34,015 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 03:54:34,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7332] [2025-03-04 03:54:34,250 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] [2025-03-04 03:54:34,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:54:34,300 INFO L204 MainTranslator]: Completed translation [2025-03-04 03:54:34,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34 WrapperNode [2025-03-04 03:54:34,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 03:54:34,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 03:54:34,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 03:54:34,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 03:54:34,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,417 INFO L138 Inliner]: procedures = 188, calls = 659, calls flagged for inlining = 74, calls inlined = 49, statements flattened = 1340 [2025-03-04 03:54:34,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 03:54:34,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 03:54:34,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 03:54:34,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 03:54:34,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,506 INFO L175 MemorySlicer]: Split 204 memory accesses to 8 slices as follows [21, 2, 115, 32, 9, 5, 8, 12]. 56 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [0, 2, 54, 4, 9, 0, 0, 12]. The 38 writes are split as follows [1, 0, 9, 28, 0, 0, 0, 0]. [2025-03-04 03:54:34,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 03:54:34,568 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 03:54:34,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 03:54:34,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 03:54:34,569 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (1/1) ... [2025-03-04 03:54:34,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:54:34,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:54:34,595 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) [2025-03-04 03:54:34,600 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 [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2025-03-04 03:54:34,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure uspace_ring_map [2025-03-04 03:54:34,614 INFO L138 BoogieDeclarations]: Found implementation of procedure uspace_ring_map [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unmap_user_pages [2025-03-04 03:54:34,614 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unmap_user_pages [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 03:54:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure hash_64 [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_64 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_release_buffers [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_release_buffers [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_write [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_write [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 03:54:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-04 03:54:34,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_open [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_open [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_to_host [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_to_host [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_idx_inc [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_idx_inc [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_head_event [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_head_event [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2025-03-04 03:54:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2025-03-04 03:54:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2025-03-04 03:54:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 03:54:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 03:54:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2025-03-04 03:54:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2025-03-04 03:54:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-03-04 03:54:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 03:54:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_exit [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_exit [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_destroy [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_destroy [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_init [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_init [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_poll [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_poll [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_lookup [2025-03-04 03:54:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_lookup [2025-03-04 03:54:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_mmap [2025-03-04 03:54:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_mmap [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2025-03-04 03:54:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2025-03-04 03:54:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 03:54:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 03:54:34,929 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 03:54:34,931 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 03:54:35,008 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8347: havoc vm_insert_page_#t~nondet448#1; [2025-03-04 03:54:35,008 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8213: havoc __phys_addr_#t~nondet427#1; [2025-03-04 03:54:35,045 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7298: havoc #t~mem304; [2025-03-04 03:54:35,056 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8259: havoc blk_rq_unmap_user_#t~nondet434#1; [2025-03-04 03:54:35,094 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6474: havoc #t~bitwise81; [2025-03-04 03:54:35,118 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6379: havoc ~res~0#1.base, ~res~0#1.offset; [2025-03-04 03:54:35,147 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8323: havoc #t~nondet444; [2025-03-04 03:54:35,422 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8255: havoc blk_rq_map_user_#t~nondet433#1; [2025-03-04 03:54:35,422 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8340: havoc scsi_init_io_#t~nondet447#1; [2025-03-04 03:54:35,422 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6451: havoc blk_rq_bytes_#t~mem77#1; [2025-03-04 03:54:35,437 INFO L1325 $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; [2025-03-04 03:54:35,438 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8272: havoc get_zeroed_page_#t~nondet436#1; [2025-03-04 03:54:35,465 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8236: havoc #t~nondet431; [2025-03-04 03:54:35,474 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8333: havoc #t~ret446.base, #t~ret446.offset; [2025-03-04 03:54:35,489 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8232: havoc #t~nondet430; [2025-03-04 03:54:37,121 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8319: havoc noop_llseek_#t~nondet443#1; [2025-03-04 03:54:37,122 INFO L1325 $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; [2025-03-04 03:54:37,122 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8278: havoc kmem_cache_create_#t~ret438#1.base, kmem_cache_create_#t~ret438#1.offset; [2025-03-04 03:54:37,122 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8197: havoc __alloc_workqueue_key_#t~ret426#1.base, __alloc_workqueue_key_#t~ret426#1.offset; [2025-03-04 03:54:37,122 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8288: havoc ldv_tgt_fops_release_1_#t~nondet439#1; [2025-03-04 03:54:37,123 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8305: havoc misc_register_#t~nondet441#1; [2025-03-04 03:54:37,123 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8301: havoc misc_deregister_#t~nondet440#1; [2025-03-04 03:54:37,127 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6769: havoc #t~mem152.base, #t~mem152.offset; [2025-03-04 03:54:37,264 INFO L? ?]: Removed 641 outVars from TransFormulas that were not future-live. [2025-03-04 03:54:37,264 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 03:54:37,285 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 03:54:37,285 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-04 03:54:37,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:54:37 BoogieIcfgContainer [2025-03-04 03:54:37,285 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 03:54:37,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 03:54:37,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 03:54:37,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 03:54:37,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:54:32" (1/3) ... [2025-03-04 03:54:37,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242af93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:54:37, skipping insertion in model container [2025-03-04 03:54:37,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:54:34" (2/3) ... [2025-03-04 03:54:37,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242af93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:54:37, skipping insertion in model container [2025-03-04 03:54:37,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:54:37" (3/3) ... [2025-03-04 03:54:37,294 INFO L128 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-04 03:54:37,306 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 03:54:37,309 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. [2025-03-04 03:54:37,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 03:54:37,365 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;@4cf064ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 03:54:37,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 03:54:37,371 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) [2025-03-04 03:54:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-04 03:54:37,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:54:37,378 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] [2025-03-04 03:54:37,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:54:37,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:54:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1686447415, now seen corresponding path program 1 times [2025-03-04 03:54:37,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:54:37,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990435652] [2025-03-04 03:54:37,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:54:37,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:54:37,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 03:54:37,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 03:54:37,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:54:37,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:54:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:54:37,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:54:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990435652] [2025-03-04 03:54:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990435652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:54:37,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:54:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 03:54:37,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992544768] [2025-03-04 03:54:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:54:37,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 03:54:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:54:37,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 03:54:37,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 03:54:37,956 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) [2025-03-04 03:54:39,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-04 03:54:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:54:39,226 INFO L93 Difference]: Finished difference Result 837 states and 1130 transitions. [2025-03-04 03:54:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 03:54:39,229 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 [2025-03-04 03:54:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:54:39,240 INFO L225 Difference]: With dead ends: 837 [2025-03-04 03:54:39,241 INFO L226 Difference]: Without dead ends: 419 [2025-03-04 03:54:39,248 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 [2025-03-04 03:54:39,250 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 16 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 03:54:39,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1607 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 03:54:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-03-04 03:54:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 410. [2025-03-04 03:54:39,307 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) [2025-03-04 03:54:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 542 transitions. [2025-03-04 03:54:39,318 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 542 transitions. Word has length 25 [2025-03-04 03:54:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:54:39,319 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 542 transitions. [2025-03-04 03:54:39,319 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) [2025-03-04 03:54:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 542 transitions. [2025-03-04 03:54:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-04 03:54:39,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:54:39,322 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] [2025-03-04 03:54:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 03:54:39,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:54:39,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:54:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1657818264, now seen corresponding path program 1 times [2025-03-04 03:54:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:54:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544640745] [2025-03-04 03:54:39,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:54:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:54:39,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 03:54:39,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 03:54:39,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:54:39,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:54:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:54:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:54:39,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544640745] [2025-03-04 03:54:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544640745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:54:39,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:54:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 03:54:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524639208] [2025-03-04 03:54:39,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:54:39,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 03:54:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:54:39,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 03:54:39,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:54:39,535 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) [2025-03-04 03:54:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:54:40,199 INFO L93 Difference]: Finished difference Result 412 states and 543 transitions. [2025-03-04 03:54:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 03:54:40,200 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 [2025-03-04 03:54:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:54:40,202 INFO L225 Difference]: With dead ends: 412 [2025-03-04 03:54:40,202 INFO L226 Difference]: Without dead ends: 409 [2025-03-04 03:54:40,202 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 [2025-03-04 03:54:40,203 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 03:54:40,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 534 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 03:54:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2025-03-04 03:54:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2025-03-04 03:54:40,225 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) [2025-03-04 03:54:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 540 transitions. [2025-03-04 03:54:40,228 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 540 transitions. Word has length 25 [2025-03-04 03:54:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:54:40,228 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 540 transitions. [2025-03-04 03:54:40,229 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) [2025-03-04 03:54:40,229 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 540 transitions. [2025-03-04 03:54:40,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-04 03:54:40,230 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:54:40,230 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] [2025-03-04 03:54:40,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 03:54:40,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:54:40,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:54:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 146901825, now seen corresponding path program 1 times [2025-03-04 03:54:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:54:40,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804229180] [2025-03-04 03:54:40,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:54:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:54:40,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 03:54:40,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 03:54:40,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:54:40,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:54:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:54:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:54:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804229180] [2025-03-04 03:54:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804229180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:54:40,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:54:40,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 03:54:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255680070] [2025-03-04 03:54:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:54:40,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 03:54:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:54:40,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 03:54:40,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:54:40,401 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) [2025-03-04 03:54:41,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:54:41,153 INFO L93 Difference]: Finished difference Result 411 states and 541 transitions. [2025-03-04 03:54:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 03:54:41,154 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 [2025-03-04 03:54:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:54:41,156 INFO L225 Difference]: With dead ends: 411 [2025-03-04 03:54:41,157 INFO L226 Difference]: Without dead ends: 408 [2025-03-04 03:54:41,157 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 [2025-03-04 03:54:41,158 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 516 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 03:54:41,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 532 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 03:54:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-03-04 03:54:41,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2025-03-04 03:54:41,180 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) [2025-03-04 03:54:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 538 transitions. [2025-03-04 03:54:41,188 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 538 transitions. Word has length 26 [2025-03-04 03:54:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:54:41,188 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 538 transitions. [2025-03-04 03:54:41,188 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) [2025-03-04 03:54:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 538 transitions. [2025-03-04 03:54:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-04 03:54:41,189 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:54:41,189 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] [2025-03-04 03:54:41,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 03:54:41,189 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:54:41,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:54:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 258648713, now seen corresponding path program 1 times [2025-03-04 03:54:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:54:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218845964] [2025-03-04 03:54:41,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:54:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:54:41,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-04 03:54:41,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 03:54:41,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:54:41,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:54:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:54:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:54:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218845964] [2025-03-04 03:54:41,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218845964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:54:41,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:54:41,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 03:54:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333847630] [2025-03-04 03:54:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:54:41,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 03:54:41,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:54:41,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 03:54:41,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:54:41,358 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) [2025-03-04 03:54:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:54:41,981 INFO L93 Difference]: Finished difference Result 408 states and 538 transitions. [2025-03-04 03:54:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 03:54:41,982 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 [2025-03-04 03:54:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:54:41,982 INFO L225 Difference]: With dead ends: 408 [2025-03-04 03:54:41,983 INFO L226 Difference]: Without dead ends: 0 [2025-03-04 03:54:41,983 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 [2025-03-04 03:54:41,984 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 03:54:41,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 530 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 03:54:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-04 03:54:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-04 03:54:41,985 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) [2025-03-04 03:54:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-04 03:54:41,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2025-03-04 03:54:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:54:41,985 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 03:54:41,985 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) [2025-03-04 03:54:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-04 03:54:41,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-04 03:54:41,987 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-04 03:54:41,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 03:54:41,989 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-04 03:54:41,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-04 03:54:43,415 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 03:54:43,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:54:43 BoogieIcfgContainer [2025-03-04 03:54:43,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 03:54:43,420 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 03:54:43,420 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 03:54:43,420 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 03:54:43,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:54:37" (3/4) ... [2025-03-04 03:54:43,422 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_idx_inc [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __raw_spin_lock_init [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_exit [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure uspace_ring_map [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure printk [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_destroy [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_write [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_init [2025-03-04 03:54:43,426 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_error [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_del [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_free [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_head_event [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_poll [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_unmap_user_pages [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _raw_spin_lock_irqsave [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_put [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure hash_64 [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~int [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv__builtin_expect [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_open [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_lookup [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_mmap [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_release_buffers [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_destroy [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spin_unlock_irqrestore [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure destroy_workqueue [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _copy_from_user [2025-03-04 03:54:43,427 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_add [2025-03-04 03:54:43,428 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_to_host [2025-03-04 03:54:43,428 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spinlock_check [2025-03-04 03:54:43,448 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 157 nodes and edges [2025-03-04 03:54:43,450 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2025-03-04 03:54:43,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-04 03:54:43,454 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-04 03:54:43,455 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 03:54:43,457 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 03:54:43,576 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 03:54:43,577 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 03:54:43,577 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 03:54:43,579 INFO L158 Benchmark]: Toolchain (without parser) took 10638.60ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 114.9MB in the beginning and 229.5MB in the end (delta: -114.7MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,579 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 03:54:43,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1361.93ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 51.3MB in the end (delta: 63.5MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.22ms. Allocated memory is still 167.8MB. Free memory was 51.3MB in the beginning and 100.6MB in the end (delta: -49.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,581 INFO L158 Benchmark]: Boogie Preprocessor took 143.29ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 76.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,581 INFO L158 Benchmark]: IcfgBuilder took 2717.15ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 76.3MB in the beginning and 254.0MB in the end (delta: -177.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,581 INFO L158 Benchmark]: TraceAbstraction took 6132.67ms. Allocated memory is still 377.5MB. Free memory was 253.1MB in the beginning and 250.2MB in the end (delta: 2.9MB). Peak memory consumption was 172.6MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,582 INFO L158 Benchmark]: Witness Printer took 156.51ms. Allocated memory is still 377.5MB. Free memory was 250.2MB in the beginning and 229.5MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 03:54:43,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1361.93ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 51.3MB in the end (delta: 63.5MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.22ms. Allocated memory is still 167.8MB. Free memory was 51.3MB in the beginning and 100.6MB in the end (delta: -49.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 143.29ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 76.3MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * IcfgBuilder took 2717.15ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 76.3MB in the beginning and 254.0MB in the end (delta: -177.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6132.67ms. Allocated memory is still 377.5MB. Free memory was 253.1MB in the beginning and 250.2MB in the end (delta: 2.9MB). Peak memory consumption was 172.6MB. Max. memory is 16.1GB. * Witness Printer took 156.51ms. Allocated memory is still 377.5MB. Free memory was 250.2MB in the beginning and 229.5MB in the end (delta: 20.7MB). 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, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1563 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1563 mSDsluCounter, 3203 SdHoareTripleChecker+Invalid, 3.1s 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! [2025-03-04 03:54:43,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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