./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:04,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:04,212 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:26:04,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:04,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:04,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:04,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:04,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:04,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:04,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:04,245 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:04,245 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:04,246 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:04,246 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:04,247 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:04,247 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:04,248 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:04,248 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:04,249 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:04,249 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:04,250 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:04,251 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:04,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:04,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:04,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:04,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:04,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:04,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:04,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:04,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:04,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:04,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:04,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:04,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:04,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:04,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:04,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:04,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:04,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:04,265 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:04,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:04,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:04,266 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:04,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:04,267 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2024-11-02 12:26:04,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:04,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:04,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:04,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:04,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:04,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:26:06,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:07,216 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:07,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-02 12:26:07,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/data/3e1598bba/2331bbd32fe8451d808e46ba9849b3ae/FLAGb3cf94555 [2024-11-02 12:26:07,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/data/3e1598bba/2331bbd32fe8451d808e46ba9849b3ae [2024-11-02 12:26:07,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:07,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:07,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:07,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:07,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:07,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:07" (1/1) ... [2024-11-02 12:26:07,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504ffe8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:07, skipping insertion in model container [2024-11-02 12:26:07,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:07" (1/1) ... [2024-11-02 12:26:07,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:08,033 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2024-11-02 12:26:08,034 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2024-11-02 12:26:08,259 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2024-11-02 12:26:08,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:08,851 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:08,966 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2024-11-02 12:26:08,967 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2024-11-02 12:26:08,983 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2024-11-02 12:26:09,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:09,213 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:09,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09 WrapperNode [2024-11-02 12:26:09,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:09,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:09,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:09,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:09,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,395 INFO L138 Inliner]: procedures = 139, calls = 843, calls flagged for inlining = 60, calls inlined = 49, statements flattened = 1871 [2024-11-02 12:26:09,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:09,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:09,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:09,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:09,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:09,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:09,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:09,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:09,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (1/1) ... [2024-11-02 12:26:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:09,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:09,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2bcf652-668d-45ad-87df-2fe1a2b45086/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:26:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:26:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:26:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:26:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:26:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:26:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2024-11-02 12:26:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2024-11-02 12:26:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-02 12:26:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-02 12:26:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-02 12:26:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-02 12:26:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:26:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:26:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2024-11-02 12:26:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2024-11-02 12:26:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-02 12:26:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-02 12:26:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2024-11-02 12:26:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2024-11-02 12:26:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2024-11-02 12:26:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2024-11-02 12:26:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:26:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2024-11-02 12:26:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2024-11-02 12:26:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:26:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:26:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:26:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:26:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:26:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:26:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2024-11-02 12:26:09,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2024-11-02 12:26:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:26:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:26:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:26:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-02 12:26:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-02 12:26:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-02 12:26:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-02 12:26:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:26:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:26:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-02 12:26:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-02 12:26:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2024-11-02 12:26:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2024-11-02 12:26:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2024-11-02 12:26:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2024-11-02 12:26:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure up [2024-11-02 12:26:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2024-11-02 12:26:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:26:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-02 12:26:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-02 12:26:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 12:26:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 12:26:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:26:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:26:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-02 12:26:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-02 12:26:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:26:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:26:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-11-02 12:26:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2024-11-02 12:26:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2024-11-02 12:26:10,138 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:10,163 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:10,421 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:26:15,693 INFO L? ?]: Removed 583 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:15,693 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:16,209 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:16,210 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:26:16,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:16 BoogieIcfgContainer [2024-11-02 12:26:16,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:16,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:16,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:16,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:16,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:07" (1/3) ... [2024-11-02 12:26:16,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357173cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:16, skipping insertion in model container [2024-11-02 12:26:16,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:09" (2/3) ... [2024-11-02 12:26:16,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357173cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:16, skipping insertion in model container [2024-11-02 12:26:16,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:16" (3/3) ... [2024-11-02 12:26:16,222 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-02 12:26:16,241 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:16,242 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:16,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:16,344 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bb10fb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:16,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 228 states have (on average 1.4385964912280702) internal successors, (328), 236 states have internal predecessors, (328), 77 states have call successors, (77), 28 states have call predecessors, (77), 27 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-02 12:26:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-02 12:26:16,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:16,370 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:16,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:16,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 456303252, now seen corresponding path program 1 times [2024-11-02 12:26:16,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:16,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268791256] [2024-11-02 12:26:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-02 12:26:19,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268791256] [2024-11-02 12:26:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268791256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:19,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590778324] [2024-11-02 12:26:19,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:19,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:19,872 INFO L87 Difference]: Start difference. First operand has 334 states, 228 states have (on average 1.4385964912280702) internal successors, (328), 236 states have internal predecessors, (328), 77 states have call successors, (77), 28 states have call predecessors, (77), 27 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-02 12:26:21,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:26:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:23,960 INFO L93 Difference]: Finished difference Result 703 states and 1016 transitions. [2024-11-02 12:26:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2024-11-02 12:26:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:23,974 INFO L225 Difference]: With dead ends: 703 [2024-11-02 12:26:23,974 INFO L226 Difference]: Without dead ends: 351 [2024-11-02 12:26:23,981 INFO L431 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 [2024-11-02 12:26:23,984 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 46 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:23,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 806 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2024-11-02 12:26:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-02 12:26:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2024-11-02 12:26:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 244 states have (on average 1.4180327868852458) internal successors, (346), 248 states have internal predecessors, (346), 76 states have call successors, (76), 29 states have call predecessors, (76), 28 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-02 12:26:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 497 transitions. [2024-11-02 12:26:24,077 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 497 transitions. Word has length 109 [2024-11-02 12:26:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:24,077 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 497 transitions. [2024-11-02 12:26:24,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-02 12:26:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 497 transitions. [2024-11-02 12:26:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-02 12:26:24,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:24,089 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-02 12:26:24,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:24,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:24,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1031007629, now seen corresponding path program 1 times [2024-11-02 12:26:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542052162] [2024-11-02 12:26:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-02 12:26:27,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542052162] [2024-11-02 12:26:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542052162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:27,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:27,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648527393] [2024-11-02 12:26:27,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:27,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:27,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:27,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:27,107 INFO L87 Difference]: Start difference. First operand 349 states and 497 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:26:29,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:26:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:30,421 INFO L93 Difference]: Finished difference Result 697 states and 995 transitions. [2024-11-02 12:26:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 137 [2024-11-02 12:26:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:30,432 INFO L225 Difference]: With dead ends: 697 [2024-11-02 12:26:30,434 INFO L226 Difference]: Without dead ends: 349 [2024-11-02 12:26:30,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:30,437 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 445 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:30,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 378 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2024-11-02 12:26:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-02 12:26:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2024-11-02 12:26:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 244 states have (on average 1.3811475409836065) internal successors, (337), 248 states have internal predecessors, (337), 76 states have call successors, (76), 29 states have call predecessors, (76), 28 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-02 12:26:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 488 transitions. [2024-11-02 12:26:30,497 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 488 transitions. Word has length 137 [2024-11-02 12:26:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:30,497 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 488 transitions. [2024-11-02 12:26:30,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:26:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 488 transitions. [2024-11-02 12:26:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-02 12:26:30,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:30,505 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:30,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:30,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:30,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1474454576, now seen corresponding path program 1 times [2024-11-02 12:26:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667539460] [2024-11-02 12:26:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-02 12:26:33,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667539460] [2024-11-02 12:26:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667539460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053682932] [2024-11-02 12:26:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:33,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:33,436 INFO L87 Difference]: Start difference. First operand 349 states and 488 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-02 12:26:35,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []