./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/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_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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_76c235b7-1650-4f1d-998c-547ed5f9aa44/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_76c235b7-1650-4f1d-998c-547ed5f9aa44/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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:56,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:56,814 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:32:56,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:56,822 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:56,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:56,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:56,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:56,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:56,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:56,861 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:56,862 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:56,862 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:56,863 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:56,865 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:56,866 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:56,866 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:56,866 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:56,866 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:56,867 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:56,867 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:56,871 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:56,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:56,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:56,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:56,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:56,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:56,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:56,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:56,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:56,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:56,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:56,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:56,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:56,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:56,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:56,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:56,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:56,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:56,891 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:56,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:56,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:56,892 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:56,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:56,892 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_76c235b7-1650-4f1d-998c-547ed5f9aa44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2024-11-02 12:32:57,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:57,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:57,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:57,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:57,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:57,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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 12:32:59,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:00,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:00,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-02 12:33:00,110 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/data/ffdb9d11d/8671aca9804445c7babfe1101b777105/FLAGe06552674 [2024-11-02 12:33:00,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/data/ffdb9d11d/8671aca9804445c7babfe1101b777105 [2024-11-02 12:33:00,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:00,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:00,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:00,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:00,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:00,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:00" (1/1) ... [2024-11-02 12:33:00,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e575b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:00, skipping insertion in model container [2024-11-02 12:33:00,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:00" (1/1) ... [2024-11-02 12:33:00,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:01,434 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_76c235b7-1650-4f1d-998c-547ed5f9aa44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2024-11-02 12:33:01,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:01,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:01,762 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_76c235b7-1650-4f1d-998c-547ed5f9aa44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2024-11-02 12:33:01,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:01,849 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:01,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01 WrapperNode [2024-11-02 12:33:01,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:01,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:01,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:01,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:01,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:01,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,022 INFO L138 Inliner]: procedures = 138, calls = 863, calls flagged for inlining = 61, calls inlined = 52, statements flattened = 1896 [2024-11-02 12:33:02,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:02,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:02,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:02,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:02,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:02,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:02,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:02,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:02,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (1/1) ... [2024-11-02 12:33:02,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:02,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:02,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c235b7-1650-4f1d-998c-547ed5f9aa44/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:33:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:33:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:33:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:33:02,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:33:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:33:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-02 12:33:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-02 12:33:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-02 12:33:02,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-02 12:33:02,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:33:02,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:33:02,305 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_dealloc_kioc [2024-11-02 12:33:02,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_dealloc_kioc [2024-11-02 12:33:02,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-02 12:33:02,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-02 12:33:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_attach_buf [2024-11-02 12:33:02,306 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_attach_buf [2024-11-02 12:33:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2024-11-02 12:33:02,306 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2024-11-02 12:33:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:33:02,307 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2024-11-02 12:33:02,308 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2024-11-02 12:33:02,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:33:02,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:33:02,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:33:02,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:33:02,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 12:33:02,309 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 12:33:02,309 INFO L130 BoogieDeclarations]: Found specification of procedure mraid_mm_ioctl [2024-11-02 12:33:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure mraid_mm_ioctl [2024-11-02 12:33:02,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-02 12:33:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-02 12:33:02,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:33:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:33:02,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:33:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-02 12:33:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-02 12:33:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-02 12:33:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-02 12:33:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-02 12:33:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-02 12:33:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:33:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:33:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:33:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-02 12:33:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-02 12:33:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2024-11-02 12:33:02,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2024-11-02 12:33:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure up [2024-11-02 12:33:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2024-11-02 12:33:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:33:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-02 12:33:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-02 12:33:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 12:33:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 12:33:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:33:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2024-11-02 12:33:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:33:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:02,316 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2024-11-02 12:33:02,316 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2024-11-02 12:33:02,795 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:02,799 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:03,077 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:33:08,396 INFO L? ?]: Removed 627 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:08,396 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:09,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:09,053 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:33:09,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:09 BoogieIcfgContainer [2024-11-02 12:33:09,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:09,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:09,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:09,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:09,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:00" (1/3) ... [2024-11-02 12:33:09,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a88d9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:09, skipping insertion in model container [2024-11-02 12:33:09,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:01" (2/3) ... [2024-11-02 12:33:09,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a88d9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:09, skipping insertion in model container [2024-11-02 12:33:09,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:09" (3/3) ... [2024-11-02 12:33:09,083 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2024-11-02 12:33:09,104 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:09,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:33:09,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:09,211 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;@26430056, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:09,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:33:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 318 states, 216 states have (on average 1.4351851851851851) internal successors, (310), 224 states have internal predecessors, (310), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-02 12:33:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-02 12:33:09,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:09,270 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:09,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:09,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2086940017, now seen corresponding path program 1 times [2024-11-02 12:33:09,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:09,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485761656] [2024-11-02 12:33:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:09,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-02 12:33:13,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485761656] [2024-11-02 12:33:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485761656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:13,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766729284] [2024-11-02 12:33:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:13,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:33:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:33:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:33:13,136 INFO L87 Difference]: Start difference. First operand has 318 states, 216 states have (on average 1.4351851851851851) internal successors, (310), 224 states have internal predecessors, (310), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:33:15,204 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 12:33:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:16,373 INFO L93 Difference]: Finished difference Result 620 states and 900 transitions. [2024-11-02 12:33:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:33:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-02 12:33:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:16,389 INFO L225 Difference]: With dead ends: 620 [2024-11-02 12:33:16,389 INFO L226 Difference]: Without dead ends: 307 [2024-11-02 12:33:16,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:33:16,399 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:16,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2024-11-02 12:33:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-02 12:33:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-11-02 12:33:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 211 states have (on average 1.4075829383886256) internal successors, (297), 214 states have internal predecessors, (297), 71 states have call successors, (71), 25 states have call predecessors, (71), 24 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-02 12:33:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 438 transitions. [2024-11-02 12:33:16,488 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 438 transitions. Word has length 136 [2024-11-02 12:33:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:16,490 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 438 transitions. [2024-11-02 12:33:16,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:33:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 438 transitions. [2024-11-02 12:33:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-02 12:33:16,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:16,498 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:16,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:33:16,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:16,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1156309417, now seen corresponding path program 1 times [2024-11-02 12:33:16,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289327691] [2024-11-02 12:33:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-02 12:33:19,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:19,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289327691] [2024-11-02 12:33:19,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289327691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:19,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:19,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:33:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503225680] [2024-11-02 12:33:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:19,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:19,387 INFO L87 Difference]: Start difference. First operand 307 states and 438 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:33:21,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:33:24,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:33:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:24,591 INFO L93 Difference]: Finished difference Result 630 states and 899 transitions. [2024-11-02 12:33:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-11-02 12:33:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:24,597 INFO L225 Difference]: With dead ends: 630 [2024-11-02 12:33:24,597 INFO L226 Difference]: Without dead ends: 338 [2024-11-02 12:33:24,600 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 12:33:24,601 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 55 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:24,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 718 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-02 12:33:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-02 12:33:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2024-11-02 12:33:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 234 states have (on average 1.4145299145299146) internal successors, (331), 238 states have internal predecessors, (331), 74 states have call successors, (74), 28 states have call predecessors, (74), 27 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-02 12:33:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 478 transitions. [2024-11-02 12:33:24,645 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 478 transitions. Word has length 138 [2024-11-02 12:33:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:24,646 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 478 transitions. [2024-11-02 12:33:24,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:33:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 478 transitions. [2024-11-02 12:33:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-02 12:33:24,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:24,658 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:24,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:33:24,659 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:24,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1101478377, now seen corresponding path program 1 times [2024-11-02 12:33:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199899275] [2024-11-02 12:33:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-02 12:33:27,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199899275] [2024-11-02 12:33:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199899275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:27,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:27,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:33:27,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015959545] [2024-11-02 12:33:27,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:27,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:27,033 INFO L87 Difference]: Start difference. First operand 336 states and 478 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-02 12:33:29,082 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 12:33:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:30,350 INFO L93 Difference]: Finished difference Result 654 states and 935 transitions. [2024-11-02 12:33:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 178 [2024-11-02 12:33:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:30,355 INFO L225 Difference]: With dead ends: 654 [2024-11-02 12:33:30,355 INFO L226 Difference]: Without dead ends: 336 [2024-11-02 12:33:30,357 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 12:33:30,358 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 413 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:30,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 357 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2024-11-02 12:33:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-02 12:33:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-11-02 12:33:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 234 states have (on average 1.376068376068376) internal successors, (322), 238 states have internal predecessors, (322), 74 states have call successors, (74), 28 states have call predecessors, (74), 27 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-02 12:33:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 469 transitions. [2024-11-02 12:33:30,388 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 469 transitions. Word has length 178 [2024-11-02 12:33:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:30,389 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 469 transitions. [2024-11-02 12:33:30,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-02 12:33:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 469 transitions. [2024-11-02 12:33:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-02 12:33:30,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:30,397 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:30,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:33:30,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:30,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1486690555, now seen corresponding path program 1 times [2024-11-02 12:33:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:30,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055148179] [2024-11-02 12:33:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms