./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-17 08:13:45,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 08:13:45,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 08:13:45,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 08:13:45,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 08:13:45,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 08:13:45,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 08:13:45,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 08:13:45,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 08:13:45,177 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 08:13:45,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 08:13:45,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 08:13:45,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 08:13:45,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 08:13:45,178 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 08:13:45,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 08:13:45,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 08:13:45,179 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 08:13:45,180 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 08:13:45,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 08:13:45,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 08:13:45,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 08:13:45,181 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 [2025-03-17 08:13:45,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 08:13:45,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 08:13:45,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 08:13:45,419 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 08:13:45,420 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 08:13:45,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-17 08:13:46,684 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1905547e1/492929ef99814f508a018a46241fef91/FLAGdd79ad8aa [2025-03-17 08:13:47,145 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 08:13:47,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-17 08:13:47,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1905547e1/492929ef99814f508a018a46241fef91/FLAGdd79ad8aa [2025-03-17 08:13:47,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1905547e1/492929ef99814f508a018a46241fef91 [2025-03-17 08:13:47,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 08:13:47,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 08:13:47,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 08:13:47,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 08:13:47,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 08:13:47,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:13:47" (1/1) ... [2025-03-17 08:13:47,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d389e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:47, skipping insertion in model container [2025-03-17 08:13:47,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:13:47" (1/1) ... [2025-03-17 08:13:47,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 08:13:48,414 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] [2025-03-17 08:13:48,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 08:13:48,666 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 08:13:49,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7332] [2025-03-17 08:13:49,363 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] [2025-03-17 08:13:49,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 08:13:49,510 INFO L204 MainTranslator]: Completed translation [2025-03-17 08:13:49,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49 WrapperNode [2025-03-17 08:13:49,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 08:13:49,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 08:13:49,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 08:13:49,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 08:13:49,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:49,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:49,785 INFO L138 Inliner]: procedures = 188, calls = 659, calls flagged for inlining = 74, calls inlined = 49, statements flattened = 1340 [2025-03-17 08:13:49,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 08:13:49,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 08:13:49,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 08:13:49,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 08:13:49,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:49,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:49,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,011 INFO L175 MemorySlicer]: Split 204 memory accesses to 8 slices as follows [2, 5, 32, 9, 115, 8, 21, 12]. 56 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 0, 4, 9, 54, 0, 0, 12]. The 38 writes are split as follows [0, 0, 28, 0, 9, 0, 1, 0]. [2025-03-17 08:13:50,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 08:13:50,091 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 08:13:50,091 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 08:13:50,091 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 08:13:50,092 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (1/1) ... [2025-03-17 08:13:50,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 08:13:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 08:13:50,119 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) [2025-03-17 08:13:50,124 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 [2025-03-17 08:13:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2025-03-17 08:13:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2025-03-17 08:13:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure uspace_ring_map [2025-03-17 08:13:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure uspace_ring_map [2025-03-17 08:13:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unmap_user_pages [2025-03-17 08:13:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unmap_user_pages [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 08:13:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure hash_64 [2025-03-17 08:13:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_64 [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_release_buffers [2025-03-17 08:13:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_release_buffers [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-17 08:13:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2025-03-17 08:13:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_write [2025-03-17 08:13:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_write [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 08:13:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-17 08:13:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-03-17 08:13:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_open [2025-03-17 08:13:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_open [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2025-03-17 08:13:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2025-03-17 08:13:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_to_host [2025-03-17 08:13:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_to_host [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-03-17 08:13:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_idx_inc [2025-03-17 08:13:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_idx_inc [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 08:13:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_head_event [2025-03-17 08:13:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_head_event [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2025-03-17 08:13:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2025-03-17 08:13:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 08:13:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2025-03-17 08:13:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-03-17 08:13:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-17 08:13:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_exit [2025-03-17 08:13:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_exit [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_destroy [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_destroy [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_init [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_init [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_poll [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_poll [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_lookup [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_lookup [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_mmap [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_mmap [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2025-03-17 08:13:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 08:13:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 08:13:50,515 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 08:13:50,518 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 08:13:50,608 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8347: havoc vm_insert_page_#t~nondet448#1; [2025-03-17 08:13:50,608 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8213: havoc __phys_addr_#t~nondet427#1; [2025-03-17 08:13:50,637 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7298: havoc #t~mem304; [2025-03-17 08:13:50,648 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8259: havoc blk_rq_unmap_user_#t~nondet434#1; [2025-03-17 08:13:50,709 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6474: havoc #t~bitwise81; [2025-03-17 08:13:50,739 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6379: havoc ~res~0#1.base, ~res~0#1.offset; [2025-03-17 08:13:50,756 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8323: havoc #t~nondet444; [2025-03-17 08:13:51,067 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8255: havoc blk_rq_map_user_#t~nondet433#1; [2025-03-17 08:13:51,067 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8340: havoc scsi_init_io_#t~nondet447#1; [2025-03-17 08:13:51,067 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6451: havoc blk_rq_bytes_#t~mem77#1; [2025-03-17 08:13:51,088 INFO L1322 $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; [2025-03-17 08:13:51,089 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8272: havoc get_zeroed_page_#t~nondet436#1; [2025-03-17 08:13:51,121 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8236: havoc #t~nondet431; [2025-03-17 08:13:51,133 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8333: havoc #t~ret446.base, #t~ret446.offset; [2025-03-17 08:13:51,152 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8232: havoc #t~nondet430; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8319: havoc noop_llseek_#t~nondet443#1; [2025-03-17 08:13:51,933 INFO L1322 $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; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8278: havoc kmem_cache_create_#t~ret438#1.base, kmem_cache_create_#t~ret438#1.offset; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8197: havoc __alloc_workqueue_key_#t~ret426#1.base, __alloc_workqueue_key_#t~ret426#1.offset; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8288: havoc ldv_tgt_fops_release_1_#t~nondet439#1; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8305: havoc misc_register_#t~nondet441#1; [2025-03-17 08:13:51,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8301: havoc misc_deregister_#t~nondet440#1; [2025-03-17 08:13:51,937 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6769: havoc #t~mem152.base, #t~mem152.offset; [2025-03-17 08:13:52,065 INFO L? ?]: Removed 524 outVars from TransFormulas that were not future-live. [2025-03-17 08:13:52,065 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 08:13:52,089 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 08:13:52,089 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 08:13:52,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:13:52 BoogieIcfgContainer [2025-03-17 08:13:52,089 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 08:13:52,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 08:13:52,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 08:13:52,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 08:13:52,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 08:13:47" (1/3) ... [2025-03-17 08:13:52,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4be76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:13:52, skipping insertion in model container [2025-03-17 08:13:52,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:13:49" (2/3) ... [2025-03-17 08:13:52,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4be76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 08:13:52, skipping insertion in model container [2025-03-17 08:13:52,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:13:52" (3/3) ... [2025-03-17 08:13:52,099 INFO L128 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2025-03-17 08:13:52,115 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 08:13:52,118 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, 386 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 08:13:52,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 08:13:52,180 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;@2797bb3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 08:13:52,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 08:13:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 386 states, 270 states have (on average 1.3222222222222222) internal successors, (357), 278 states have internal predecessors, (357), 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) [2025-03-17 08:13:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-17 08:13:52,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:13:52,190 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] [2025-03-17 08:13:52,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:13:52,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:13:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1320350247, now seen corresponding path program 1 times [2025-03-17 08:13:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:13:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022012213] [2025-03-17 08:13:52,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:13:52,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:13:52,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 08:13:52,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 08:13:52,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:13:52,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:13:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 08:13:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:13:52,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022012213] [2025-03-17 08:13:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022012213] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:13:52,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:13:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:13:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462466502] [2025-03-17 08:13:52,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:13:52,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:13:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:13:52,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:13:52,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:13:52,744 INFO L87 Difference]: Start difference. First operand has 386 states, 270 states have (on average 1.3222222222222222) internal successors, (357), 278 states have internal predecessors, (357), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-17 08:13:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:13:52,870 INFO L93 Difference]: Finished difference Result 782 states and 1074 transitions. [2025-03-17 08:13:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:13:52,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2025-03-17 08:13:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:13:52,882 INFO L225 Difference]: With dead ends: 782 [2025-03-17 08:13:52,883 INFO L226 Difference]: Without dead ends: 391 [2025-03-17 08:13:52,890 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 [2025-03-17 08:13:52,894 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 511 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:13:52,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 539 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:13:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2025-03-17 08:13:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 382. [2025-03-17 08:13:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 268 states have (on average 1.3097014925373134) internal successors, (351), 274 states have internal predecessors, (351), 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) [2025-03-17 08:13:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 514 transitions. [2025-03-17 08:13:52,971 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 514 transitions. Word has length 23 [2025-03-17 08:13:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:13:52,973 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 514 transitions. [2025-03-17 08:13:52,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-17 08:13:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 514 transitions. [2025-03-17 08:13:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-17 08:13:52,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:13:52,977 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] [2025-03-17 08:13:52,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 08:13:52,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:13:52,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:13:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1348979398, now seen corresponding path program 1 times [2025-03-17 08:13:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:13:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857205614] [2025-03-17 08:13:52,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:13:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:13:53,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 08:13:53,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 08:13:53,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:13:53,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:13:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 08:13:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:13:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857205614] [2025-03-17 08:13:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857205614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:13:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:13:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:13:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092631888] [2025-03-17 08:13:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:13:53,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:13:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:13:53,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:13:53,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:13:53,304 INFO L87 Difference]: Start difference. First operand 382 states and 514 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-17 08:13:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:13:53,347 INFO L93 Difference]: Finished difference Result 384 states and 515 transitions. [2025-03-17 08:13:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:13:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2025-03-17 08:13:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:13:53,350 INFO L225 Difference]: With dead ends: 384 [2025-03-17 08:13:53,350 INFO L226 Difference]: Without dead ends: 381 [2025-03-17 08:13:53,351 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 [2025-03-17 08:13:53,351 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 495 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:13:53,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:13:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2025-03-17 08:13:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2025-03-17 08:13:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 268 states have (on average 1.3059701492537314) internal successors, (350), 273 states have internal predecessors, (350), 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) [2025-03-17 08:13:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 512 transitions. [2025-03-17 08:13:53,408 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 512 transitions. Word has length 23 [2025-03-17 08:13:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:13:53,408 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 512 transitions. [2025-03-17 08:13:53,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-17 08:13:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 512 transitions. [2025-03-17 08:13:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-17 08:13:53,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:13:53,412 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] [2025-03-17 08:13:53,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 08:13:53,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:13:53,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:13:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1131643909, now seen corresponding path program 1 times [2025-03-17 08:13:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:13:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329453008] [2025-03-17 08:13:53,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:13:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:13:53,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 08:13:53,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 08:13:53,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:13:53,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:13:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 08:13:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:13:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329453008] [2025-03-17 08:13:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329453008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:13:53,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:13:53,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:13:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360781311] [2025-03-17 08:13:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:13:53,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:13:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:13:53,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:13:53,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:13:53,630 INFO L87 Difference]: Start difference. First operand 381 states and 512 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-03-17 08:13:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:13:53,676 INFO L93 Difference]: Finished difference Result 383 states and 513 transitions. [2025-03-17 08:13:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:13:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2025-03-17 08:13:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:13:53,681 INFO L225 Difference]: With dead ends: 383 [2025-03-17 08:13:53,682 INFO L226 Difference]: Without dead ends: 380 [2025-03-17 08:13:53,683 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 [2025-03-17 08:13:53,684 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 492 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:13:53,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 506 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:13:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-03-17 08:13:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2025-03-17 08:13:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 268 states have (on average 1.3022388059701493) internal successors, (349), 272 states have internal predecessors, (349), 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) [2025-03-17 08:13:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 510 transitions. [2025-03-17 08:13:53,717 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 510 transitions. Word has length 24 [2025-03-17 08:13:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:13:53,718 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 510 transitions. [2025-03-17 08:13:53,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-03-17 08:13:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 510 transitions. [2025-03-17 08:13:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-17 08:13:53,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 08:13:53,720 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] [2025-03-17 08:13:53,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 08:13:53,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 08:13:53,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 08:13:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash -721556121, now seen corresponding path program 1 times [2025-03-17 08:13:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 08:13:53,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946619863] [2025-03-17 08:13:53,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 08:13:53,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 08:13:53,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 08:13:53,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 08:13:53,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 08:13:53,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 08:13:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 08:13:53,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 08:13:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946619863] [2025-03-17 08:13:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946619863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 08:13:53,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 08:13:53,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 08:13:53,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42155396] [2025-03-17 08:13:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 08:13:53,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 08:13:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 08:13:53,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 08:13:53,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 08:13:53,899 INFO L87 Difference]: Start difference. First operand 380 states and 510 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) [2025-03-17 08:13:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 08:13:53,923 INFO L93 Difference]: Finished difference Result 380 states and 510 transitions. [2025-03-17 08:13:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 08:13:53,924 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 [2025-03-17 08:13:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 08:13:53,924 INFO L225 Difference]: With dead ends: 380 [2025-03-17 08:13:53,924 INFO L226 Difference]: Without dead ends: 0 [2025-03-17 08:13:53,925 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 [2025-03-17 08:13:53,926 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 488 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 08:13:53,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 504 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 08:13:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-17 08:13:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-17 08:13:53,926 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) [2025-03-17 08:13:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-17 08:13:53,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2025-03-17 08:13:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 08:13:53,927 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 08:13:53,927 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) [2025-03-17 08:13:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-17 08:13:53,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-17 08:13:53,929 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-17 08:13:53,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 08:13:53,931 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 08:13:53,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-17 08:13:55,824 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 08:13:55,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 08:13:55 BoogieIcfgContainer [2025-03-17 08:13:55,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 08:13:55,833 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 08:13:55,833 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 08:13:55,833 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 08:13:55,834 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:13:52" (3/4) ... [2025-03-17 08:13:55,836 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_idx_inc [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __raw_spin_lock_init [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_exit [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure uspace_ring_map [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure printk [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_destroy [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_write [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_ring_init [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_error [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_del [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_free [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_head_event [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_poll [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_unmap_user_pages [2025-03-17 08:13:55,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _raw_spin_lock_irqsave [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_put [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure hash_64 [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ##fun~$Pointer$~TO~int [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv__builtin_expect [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_open [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_host_lookup [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure tgt_mmap [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_release_buffers [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure kmem_cache_destroy [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spin_unlock_irqrestore [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure destroy_workqueue [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure _copy_from_user [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure list_add [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure scsi_tgt_cmd_to_host [2025-03-17 08:13:55,842 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure spinlock_check [2025-03-17 08:13:55,862 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 157 nodes and edges [2025-03-17 08:13:55,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2025-03-17 08:13:55,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-17 08:13:55,867 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-17 08:13:55,870 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 08:13:55,871 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 08:13:56,051 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 08:13:56,051 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 08:13:56,052 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 08:13:56,053 INFO L158 Benchmark]: Toolchain (without parser) took 8852.68ms. Allocated memory was 167.8MB in the beginning and 419.4MB in the end (delta: 251.7MB). Free memory was 113.0MB in the beginning and 298.4MB in the end (delta: -185.4MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,053 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 08:13:56,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2311.38ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 46.6MB in the end (delta: 66.4MB). Peak memory consumption was 105.3MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 273.57ms. Allocated memory is still 167.8MB. Free memory was 46.6MB in the beginning and 97.5MB in the end (delta: -50.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,055 INFO L158 Benchmark]: Boogie Preprocessor took 303.07ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 70.1MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,056 INFO L158 Benchmark]: IcfgBuilder took 1998.07ms. Allocated memory was 167.8MB in the beginning and 419.4MB in the end (delta: 251.7MB). Free memory was 70.1MB in the beginning and 298.7MB in the end (delta: -228.7MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,056 INFO L158 Benchmark]: TraceAbstraction took 3738.68ms. Allocated memory is still 419.4MB. Free memory was 297.7MB in the beginning and 319.2MB in the end (delta: -21.4MB). Peak memory consumption was 206.3MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,056 INFO L158 Benchmark]: Witness Printer took 218.43ms. Allocated memory is still 419.4MB. Free memory was 319.2MB in the beginning and 298.4MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 08:13:56,057 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 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2311.38ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 46.6MB in the end (delta: 66.4MB). Peak memory consumption was 105.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 273.57ms. Allocated memory is still 167.8MB. Free memory was 46.6MB in the beginning and 97.5MB in the end (delta: -50.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 303.07ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 70.1MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * IcfgBuilder took 1998.07ms. Allocated memory was 167.8MB in the beginning and 419.4MB in the end (delta: 251.7MB). Free memory was 70.1MB in the beginning and 298.7MB in the end (delta: -228.7MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3738.68ms. Allocated memory is still 419.4MB. Free memory was 297.7MB in the beginning and 319.2MB in the end (delta: -21.4MB). Peak memory consumption was 206.3MB. Max. memory is 16.1GB. * Witness Printer took 218.43ms. Allocated memory is still 419.4MB. Free memory was 319.2MB in the beginning and 298.4MB 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, 386 locations, 606 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1986 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1986 mSDsluCounter, 2057 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 2044 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 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! [2025-03-17 08:13:56,088 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