./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d4a04f164f23bccd0af71a4f58b3950d923042f92e5233e5b981a5aec1f8e73c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:06:52,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:06:52,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:06:52,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:06:52,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:06:52,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:06:52,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:06:52,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:06:52,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:06:52,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:06:52,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:06:52,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:06:52,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:06:52,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:06:52,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:06:52,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:06:52,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:06:52,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:06:52,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:06:52,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:06:52,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:06:52,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:06:52,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:06:52,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:06:52,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:06:52,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:06:52,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:06:52,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:06:52,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:06:52,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:06:52,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:06:52,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:06:52,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:06:52,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:06:52,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:06:52,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:06:52,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:06:52,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:06:52,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:06:52,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:06:52,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:06:52,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:06:52,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:06:52,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:06:52,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:06:52,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:06:52,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:06:52,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:06:52,966 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:06:52,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:06:52,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:06:52,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:06:52,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:06:52,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:06:52,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:06:52,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:06:52,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:06:52,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:06:52,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:06:52,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:06:52,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:06:52,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:06:52,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:06:52,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:06:52,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:06:52,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:06:52,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:06:52,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:06:52,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:06:52,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:06:52,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:06:52,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a04f164f23bccd0af71a4f58b3950d923042f92e5233e5b981a5aec1f8e73c [2021-11-06 15:06:53,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:06:53,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:06:53,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:06:53,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:06:53,206 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:06:53,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-06 15:06:53,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207cd40e/db8f872bcc234edfb047fc21952cc6bc/FLAG459ab2caf [2021-11-06 15:06:54,105 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:06:54,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-06 15:06:54,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207cd40e/db8f872bcc234edfb047fc21952cc6bc/FLAG459ab2caf [2021-11-06 15:06:54,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207cd40e/db8f872bcc234edfb047fc21952cc6bc [2021-11-06 15:06:54,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:06:54,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:06:54,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:06:54,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:06:54,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:06:54,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:06:54" (1/1) ... [2021-11-06 15:06:54,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38af3878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:54, skipping insertion in model container [2021-11-06 15:06:54,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:06:54" (1/1) ... [2021-11-06 15:06:54,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:06:54,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:06:54,941 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5732] [2021-11-06 15:06:54,942 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5733-5734] [2021-11-06 15:06:55,726 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i[176188,176201] [2021-11-06 15:06:58,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:06:58,902 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:06:59,033 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5732] [2021-11-06 15:06:59,034 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5733-5734] [2021-11-06 15:06:59,044 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i[176188,176201] [2021-11-06 15:06:59,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:06:59,707 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:06:59,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59 WrapperNode [2021-11-06 15:06:59,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:06:59,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:06:59,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:06:59,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:06:59,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:06:59,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:05,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:07:05,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:07:05,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:07:05,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:07:05,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:05,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:06,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:06,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:09,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:10,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:10,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:12,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:07:12,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:07:12,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:07:12,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:07:12,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (1/1) ... [2021-11-06 15:07:12,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:07:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:07:12,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:07:12,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:07:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_issue_init_mfi [2021-11-06 15:07:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_issue_init_mfi [2021-11-06 15:07:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_shutdown [2021-11-06 15:07:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_shutdown [2021-11-06 15:07:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 15:07:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:07:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:07:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_queue_command_lck [2021-11-06 15:07:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_queue_command_lck [2021-11-06 15:07:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:07:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:07:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_fusion_ocr_wq [2021-11-06 15:07:12,124 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_fusion_ocr_wq [2021-11-06 15:07:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:07:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure process_fw_state_change_wq [2021-11-06 15:07:12,124 INFO L138 BoogieDeclarations]: Found implementation of procedure process_fw_state_change_wq [2021-11-06 15:07:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:07:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:07:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:07:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:07:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_ioc_init_fusion [2021-11-06 15:07:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_ioc_init_fusion [2021-11-06 15:07:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_fw [2021-11-06 15:07:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_fw [2021-11-06 15:07:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2021-11-06 15:07:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2021-11-06 15:07:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_transition_to_ready [2021-11-06 15:07:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_transition_to_ready [2021-11-06 15:07:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:07:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:07:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:07:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_adapter_mfi [2021-11-06 15:07:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_adapter_mfi [2021-11-06 15:07:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_complete_cmd_dpc_fusion [2021-11-06 15:07:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_complete_cmd_dpc_fusion [2021-11-06 15:07:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_probe_one [2021-11-06 15:07:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_probe_one [2021-11-06 15:07:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_reset_fusion [2021-11-06 15:07:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_reset_fusion [2021-11-06 15:07:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cmd_fusion [2021-11-06 15:07:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cmd_fusion [2021-11-06 15:07:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:07:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_queue_command [2021-11-06 15:07:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_queue_command [2021-11-06 15:07:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_complete_cmd [2021-11-06 15:07:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_complete_cmd [2021-11-06 15:07:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_wait_for_outstanding_fusion [2021-11-06 15:07:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_wait_for_outstanding_fusion [2021-11-06 15:07:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:07:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:07:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 15:07:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:07:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_detach_one [2021-11-06 15:07:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_detach_one [2021-11-06 15:07:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_adapter_fusion [2021-11-06 15:07:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_adapter_fusion [2021-11-06 15:10:13,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:10:13,204 INFO L299 CfgBuilder]: Removed 53573 assume(true) statements. [2021-11-06 15:10:13,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:10:13 BoogieIcfgContainer [2021-11-06 15:10:13,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:10:13,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:10:13,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:10:13,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:10:13,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:06:54" (1/3) ... [2021-11-06 15:10:13,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f35dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:10:13, skipping insertion in model container [2021-11-06 15:10:13,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:06:59" (2/3) ... [2021-11-06 15:10:13,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f35dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:10:13, skipping insertion in model container [2021-11-06 15:10:13,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:10:13" (3/3) ... [2021-11-06 15:10:13,254 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-06 15:10:13,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:10:13,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 15:10:13,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:10:13,584 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:10:13,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 15:10:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 38559 states, 38110 states have (on average 1.3580425085279455) internal successors, (51755), 38135 states have internal predecessors, (51755), 408 states have call successors, (408), 21 states have call predecessors, (408), 21 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-06 15:10:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 15:10:14,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:10:14,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:10:14,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [megasas_init_adapter_mfiErr0ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr1ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:10:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:10:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash -174714593, now seen corresponding path program 1 times [2021-11-06 15:10:14,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:10:14,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375365982] [2021-11-06 15:10:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:10:14,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:10:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:10:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:10:14,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:10:14,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375365982] [2021-11-06 15:10:14,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375365982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:10:14,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:10:14,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:10:14,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577746502] [2021-11-06 15:10:15,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:10:15,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:10:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:10:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:10:15,079 INFO L87 Difference]: Start difference. First operand has 38559 states, 38110 states have (on average 1.3580425085279455) internal successors, (51755), 38135 states have internal predecessors, (51755), 408 states have call successors, (408), 21 states have call predecessors, (408), 21 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:10:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:10:18,663 INFO L93 Difference]: Finished difference Result 114293 states and 156647 transitions. [2021-11-06 15:10:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:10:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 15:10:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:10:19,577 INFO L225 Difference]: With dead ends: 114293 [2021-11-06 15:10:19,577 INFO L226 Difference]: Without dead ends: 75329 [2021-11-06 15:10:20,189 INFO L786 BasicCegarLoop]: 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 [2021-11-06 15:10:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75329 states. [2021-11-06 15:10:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75329 to 75289. [2021-11-06 15:10:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75289 states, 74412 states have (on average 1.3514890071493846) internal successors, (100567), 74442 states have internal predecessors, (100567), 816 states have call successors, (816), 42 states have call predecessors, (816), 42 states have return successors, (816), 810 states have call predecessors, (816), 816 states have call successors, (816) [2021-11-06 15:10:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75289 states to 75289 states and 102199 transitions. [2021-11-06 15:10:23,159 INFO L78 Accepts]: Start accepts. Automaton has 75289 states and 102199 transitions. Word has length 86 [2021-11-06 15:10:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:10:23,161 INFO L470 AbstractCegarLoop]: Abstraction has 75289 states and 102199 transitions. [2021-11-06 15:10:23,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:10:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 75289 states and 102199 transitions. [2021-11-06 15:10:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 15:10:23,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:10:23,175 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:10:23,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:10:23,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting megasas_init_adapter_fusionErr0ASSERT_VIOLATIONERROR_FUNCTION === [megasas_init_adapter_mfiErr0ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr1ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:10:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:10:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1973077234, now seen corresponding path program 1 times [2021-11-06 15:10:23,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:10:23,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069590329] [2021-11-06 15:10:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:10:23,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:10:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:10:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-06 15:10:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:10:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:10:24,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:10:24,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069590329] [2021-11-06 15:10:24,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069590329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:10:24,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185009102] [2021-11-06 15:10:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:10:24,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:10:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:10:24,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:10:24,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:10:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:10:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 4501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 15:10:27,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:10:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:10:28,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185009102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:10:28,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:10:28,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 15:10:28,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081874852] [2021-11-06 15:10:28,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:10:28,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:10:28,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:10:28,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:10:28,209 INFO L87 Difference]: Start difference. First operand 75289 states and 102199 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:10:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:10:32,425 INFO L93 Difference]: Finished difference Result 218361 states and 296529 transitions. [2021-11-06 15:10:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:10:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2021-11-06 15:10:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:10:33,982 INFO L225 Difference]: With dead ends: 218361 [2021-11-06 15:10:33,982 INFO L226 Difference]: Without dead ends: 143222 [2021-11-06 15:10:34,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:10:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143222 states.